fix & refactor (#18973)

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

models/repo.go

@@ -956,28 +956,28 @@ func DeleteRepository(doer *user_model.User, uid, repoID int64) error {
 	}
 
 	// Remove archives
-	for i := range archivePaths {
-		admin_model.RemoveStorageWithNotice(db.DefaultContext, storage.RepoArchives, "Delete repo archive file", archivePaths[i])
+	for _, archive := range archivePaths {
+		admin_model.RemoveStorageWithNotice(db.DefaultContext, storage.RepoArchives, "Delete repo archive file", archive)
 	}
 
 	// Remove lfs objects
-	for i := range lfsPaths {
-		admin_model.RemoveStorageWithNotice(db.DefaultContext, storage.LFS, "Delete orphaned LFS file", lfsPaths[i])
+	for _, lfsObj := range lfsPaths {
+		admin_model.RemoveStorageWithNotice(db.DefaultContext, storage.LFS, "Delete orphaned LFS file", lfsObj)
 	}
 
 	// Remove issue attachment files.
-	for i := range attachmentPaths {
-		admin_model.RemoveStorageWithNotice(db.DefaultContext, storage.Attachments, "Delete issue attachment", attachmentPaths[i])
+	for _, attachment := range attachmentPaths {
+		admin_model.RemoveStorageWithNotice(db.DefaultContext, storage.Attachments, "Delete issue attachment", attachment)
 	}
 
 	// Remove release attachment files.
-	for i := range releaseAttachments {
-		admin_model.RemoveStorageWithNotice(db.DefaultContext, storage.Attachments, "Delete release attachment", releaseAttachments[i])
+	for _, releaseAttachment := range releaseAttachments {
+		admin_model.RemoveStorageWithNotice(db.DefaultContext, storage.Attachments, "Delete release attachment", releaseAttachment)
 	}
 
 	// Remove attachment with no issue_id and release_id.
-	for i := range newAttachmentPaths {
-		admin_model.RemoveStorageWithNotice(db.DefaultContext, storage.Attachments, "Delete issue attachment", attachmentPaths[i])
+	for _, newAttachment := range newAttachmentPaths {
+		admin_model.RemoveStorageWithNotice(db.DefaultContext, storage.Attachments, "Delete issue attachment", newAttachment)
 	}
 
 	if len(repo.Avatar) > 0 {