Whitespace change to reduce diff in future patch.

Patch 2 of 11 in 'Add a "probe-stack" attribute' review thread

Patch by: john.kare.alsaker@gmail.com



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216235 91177308-0d34-0410-b5e6-96231b3b80d8