scm: git: return saved revision at model "save_revision" (#5501)

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@7654 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/models/repository/git.rb

@@ -165,6 +165,7 @@ class Repository::Git < Repository
                   :path      => file[:path])
       end
     end
+    changeset
   end
   private :save_revision