Add more linters to improve code readability (#19989)

Add nakedret, unconvert, wastedassign, stylecheck and nolintlint linters to improve code readability

- nakedret - https://github.com/alexkohler/nakedret - nakedret is a Go static analysis tool to find naked returns in functions greater than a specified function length.
- unconvert - https://github.com/mdempsky/unconvert - Remove unnecessary type conversions
- wastedassign - https://github.com/sanposhiho/wastedassign -  wastedassign finds wasted assignment statements.
- notlintlint -  Reports ill-formed or insufficient nolint directives
- stylecheck - https://staticcheck.io/docs/checks/#ST - keep style consistent
  - excluded: [ST1003 - Poorly chosen identifier](https://staticcheck.io/docs/checks/#ST1003) and [ST1005 - Incorrectly formatted error string](https://staticcheck.io/docs/checks/#ST1005)

1 files changed, 5 insertions, 5 deletions

diff --git a/modules/migration/issue.go b/modules/migration/issue.go
index 78f648dd2d..cc13570afb 100644
--- a/modules/migration/issue.go
+++ b/modules/migration/issue.go
@@ -30,11 +30,11 @@ type Issue struct {
 }
 
 // GetExternalName ExternalUserMigrated interface
-func (i *Issue) GetExternalName() string { return i.PosterName }
+func (issue *Issue) GetExternalName() string { return issue.PosterName }
 
 // GetExternalID ExternalUserMigrated interface
-func (i *Issue) GetExternalID() int64 { return i.PosterID }
+func (issue *Issue) GetExternalID() int64 { return issue.PosterID }
 
-func (i *Issue) GetLocalIndex() int64          { return i.Number }
-func (i *Issue) GetForeignIndex() int64        { return i.ForeignIndex }
-func (i *Issue) GetContext() DownloaderContext { return i.Context }
+func (issue *Issue) GetLocalIndex() int64          { return issue.Number }
+func (issue *Issue) GetForeignIndex() int64        { return issue.ForeignIndex }
+func (issue *Issue) GetContext() DownloaderContext { return issue.Context }