Backport: Fix lint, fmt and integration testing errors (#2553)

* Fix lint errors

* Fix fmt errors (#2544)

* Hotfix for integration testing (#2473)

* Hotfix for integration testing

modules/context/repo.go

@@ -166,7 +166,7 @@ func RedirectToRepo(ctx *Context, redirectRepoID int64) {
 func RepoIDAssignment() macaron.Handler {
 	return func(ctx *Context) {
 		var (
-			err   error
+			err error
 		)
 
 		repoID := ctx.ParamsInt64(":repoid")

modules/lfs/content_store.go

@@ -70,10 +70,7 @@ func (s *ContentStore) Put(meta *models.LFSMetaObject, r io.Reader) error {
 		return errHashMismatch
 	}
 
-	if err := os.Rename(tmpPath, path); err != nil {
-		return err
-	}
-	return nil
+	return os.Rename(tmpPath, path)
 }
 
 // Exists returns true if the object exists in the content store.

modules/log/file.go

@@ -110,10 +110,7 @@ func (w *FileLogWriter) StartLogger() error {
 		return err
 	}
 	w.mw.SetFd(fd)
-	if err = w.initFd(); err != nil {
-		return err
-	}
-	return nil
+	return w.initFd()
 }
 
 func (w *FileLogWriter) docheck(size int) {