Fixes https://github.com/llvm/llvm-project/issues/56352.
LGTM
You can delete both lines as the body of the if statement is unreachable. (After the while loop on lines 62-63, IndentForLevel.size() is larger than Line.Level.)
So how about that?
Good idea, but it's an unrelated change. Let's take care of it in D129105, which I will update to use resize() instead of insert().
Address comments.