Fix DOS-style newlines.

A previous patch r210330 (and possibly another) introduced DOS-style newlines
into a UNIX newline formatted file. 

Patch by Mark Heffernan (http://reviews.llvm.org/D4046)



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@210369 91177308-0d34-0410-b5e6-96231b3b80d8