There is a potential memory leak in `Workerpool` due to the intricacies of
`time.Timer` stopping.

Whenever a `time.Timer` is `Stop`ped its channel must be cleared using a
`select` if the result of the `Stop()` is `false`.

Unfortunately in `Workerpool` these were checked the wrong way round.

However, there were a few other places that were not being checked.

Signed-off-by: Andrew Thornton <art27@cantab.net>

Co-authored-by: techknowlogick <techknowlogick@gitea.io>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>

* fix typo

* Migrate reviews when migrating repository from github

* fix lint

* Added test and migration when external user login

* fix test

* fix commented state

* Some improvements

* fix bug when get pull request and ref original author on code comments

* Fix migrated line; Added comment for review

* Don't load all pull requests attributes

* Fix typo

* wrong change copy head

* fix tests

* fix reactions

* Fix test

* fix fmt

* fix review comment reactions

* ci: configure remaining github limmit

* prepend with github since package is common to all migrations

* add RefreshRate

* Update github.go

* add missing space

* go fmt

* Read env variable GITHUB_READ_TOKEN for token

* Update .drone.yml

* Migrate reactions when migrating repository from github

* fix missed sleep

* fix tests

* update reactions when external user binding

* Fix test

* fix tests

* change the copy head

* fix test

* fix migrator add/delete reaction

* Fix missing updated time on migrated issues and comments

* Fix testing and missing updated on migrating pullrequest

Co-authored-by: Antoine GIRARD <sapk@users.noreply.github.com>

* Sleep longer if request speed is over github limitation

* improve code

* remove unused code

* fix lint

* Use github's rate limit remain value to determine how long to sleep

* Save reset time when finished github api request

* fix bug

* fix lint

* Add context.Context for sleep

* fix test

* improve code

* fix bug and lint

* fix import order

* update migrated issues/comments when login as github

* add get userid when migrating or login with github oauth2

* fix lint

* add migrations for repository service type

* fix build

* remove unnecessary dependencies on migrations

* add cron task to update migrations poster ids and fix posterid when migrating

* fix lint

* fix lint

* improve code

* fix lint

* improve code

* replace releases publish id to actual author id

* fix import

* fix bug

* fix lint

* fix rawdata definition

* fix some bugs

* fix error message

* move migrating to backend

* add loading image when migrating and fix tests

* fix format

* fix lint

* add redis task queue support and improve docs

* add redis vendor

* fix vet

* add database migrations and fix app.ini sample

* add comments for task section on app.ini.sample

* Update models/migrations/v84.go

Co-Authored-By: lunny <xiaolunwen@gmail.com>

* Update models/repo.go

Co-Authored-By: lunny <xiaolunwen@gmail.com>

* move migrating to backend

* add loading image when migrating and fix tests

* fix fmt

* add redis task queue support and improve docs

* fix fixtures

* fix fixtures

* fix duplicate function on index.js

* fix tests

* rename repository statuses

* check if repository is being create when SSH request

* fix lint

* fix template

* some improvements

* fix template

* unified migrate options

* fix lint

* fix loading page

* refactor

* When gitea restart, don't restart the running tasks because we may have servel gitea instances, that may break the migration

* fix js

* Update models/repo.go

Co-Authored-By: guillep2k <18600385+guillep2k@users.noreply.github.com>

* Update docs/content/doc/advanced/config-cheat-sheet.en-us.md

Co-Authored-By: guillep2k <18600385+guillep2k@users.noreply.github.com>

* fix tests

* rename ErrTaskIsNotExist to ErrTaskDoesNotExist

* delete release after add one on tests to make it run happy

* fix tests

* fix tests

* improve codes

* fix lint

* fix lint

* fix migrations

* add extra user information when migrating release

* add migrations

* fix tests

* add GetTopics interface

* CreateTopics

* remove un-needed comment

* Store original author info for migrated issues and comments

Keep original author name for displaying in Gitea interface and also
store original author user ID for potential future use in linking
accounts from old location.

* Add original_url for repo

Store the original URL for a migrated repo

Clean up migrations/tests

* fix migration

* fix golangci-lint

* make 'make revive' happy also

* Modify templates to use OriginalAuthor if set

Use the original author name in templates if it is set rather than the
user who migrated/currently owns the issues

* formatting fixes

* make generate-swagger

* Use default avatar for imported comments

* Remove no longer used IgnoreIssueAuthor option

* Add OriginalAuthorID to swagger also

* Use batch insert on migrating repository to make the process faster

* fix lint

* fix tests

* fix comments

* fix migration panic when Head.User is not exist

* fix test

* improve github downloader on migrations

* fix tests

* fix  uppercase function parameters

* add migrations

* fix package dependency

* fix lints

* implements migrations except pull requests

* add releases

* migrating releases

* fix bug

* fix lint

* fix migrate releases

* fix tests

* add rollback

* pull request migtations

* fix import

* fix go module vendor

* add tests for upload to gitea

* more migrate options

* fix swagger-check

* fix misspell

* add options on migration UI

* fix log error

* improve UI options on migrating

* add support for username password when migrating from github

* fix tests

* remove comments and fix migrate limitation

* improve error handles

* migrate API will also support migrate milestones/labels/issues/pulls/releases

* fix tests and remove unused codes

* add DownloaderFactory and docs about how to create a new Downloader

* fix misspell

* fix migration docs

* Add hints about migrate options on migration page

* fix tests