We may not have the mangling for static locals vs. enums completely figured out,
but at least for my simple test cases, enums should not increment the mangling
number.

Differential Revision: http://reviews.llvm.org/D4164

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@211078 91177308-0d34-0410-b5e6-96231b3b80d8