Adjust build fix from r199494 to use C++ casts
Adjust build fix from r199494 to use C++ casts

Change suggested by Joerg Sonnenberger!

git-svn-id: 756ef344af921d95d562d9e9f9389127a89a6314@199500 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/libcxx,llvm-mirror/libcxx,llvm-mirror/libcxx,llvm-mirror/libcxx,llvm-mirror/libcxx