Revert r172878, "Reword warning about using a *static* variable within its own initialization."

It broke, at least, linux, msvc and mingw bots.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@172879 91177308-0d34-0410-b5e6-96231b3b80d8
Whitespace.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@172881 91177308-0d34-0410-b5e6-96231b3b80d8