fix(staging): prevent index out of bounds when unstaging at buffer end#2966

xfocus3 wants to merge 3 commits into

gitui-org:mastergitui-org/gitui:masterfrom

xfocus3:fix/unstage-index-out-of-bounds-2953xfocus3/gitui:fix/unstage-index-out-of-bounds-2953Copy head branch name to clipboard