Preserve hanging indent when breaking line comments.
Summary:
If we need to break the second line here:
// something: aaaaa aaaaa aaaaaa aaaaa aaaaa
// aaaaa aaaaa aaaaaa aaaaa aaaaa aaaaa
with the patch it will be turned to
// something: aaaaa aaaaa aaaaaa aaaaa aaaaa
// aaaaa aaaaa aaaaaa aaaaa aaaaa
// aaaaa
instead of
// something: aaaaa aaaaa aaaaaa aaaaa aaaaa
// aaaaa aaaaa aaaaaa aaaaa aaaaa
// aaaaa
Reviewers: djasper, klimek
Reviewed By: klimek
CC: cfe-commits, klimek
Differential Revision: http://llvm-reviews.chandlerc.com/D2988
llvm-svn: 203458