Zhihao Yuan: Replace operator& with addressof in reference_wrapper constructor.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@187927 91177308-0d34-0410-b5e6-96231b3b80d8
Update CREDITS.TXT

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@187936 91177308-0d34-0410-b5e6-96231b3b80d8