Summary: This is especially important so that if a change is solely inserting a block around a few statements, clang-format-diff.py will still clean up and add indentation to the inner parts.

Reviewers: klimek

Subscribers: cfe-commits, klimek

Differential Revision: http://reviews.llvm.org/D14105

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@251474 91177308-0d34-0410-b5e6-96231b3b80d8