Another stab at fixing http://llvm.org/bugs/show_bug.cgi?id=12007.  I earlier missed that there are two common_type definitions and corrected only one of them.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@150599 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed