Fix incorrect comment diff hunk parsing, fix github asset ID nil panic (#35046)#35055

wxiaoguang merged 2 commits intogo-gitea:release/v1.24go-gitea/gitea:release/v1.24from

GiteaBot:backport-35046-v1.24GiteaBot/gitea:backport-35046-v1.24Copy head branch name to clipboard