Dont overwrite err with nil & rename PullCheckingFuncs to reflect there usage#19572

6543 merged 5 commits intogo-gitea:maingo-gitea/gitea:mainfrom

6543-forks:CheckPullMergable_check_all_branch_protections6543-forks/gitea:CheckPullMergable_check_all_branch_protectionsCopy head branch name to clipboard