clang-format: Fix semicolon less macro-detection.

It was fooled by the comment.

Before:
  SOME_UNRELATED_MACRO
      /*static*/ int i;

After:
  SOME_UNRELATED_MACRO
  /*static*/ int i;

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@237246 91177308-0d34-0410-b5e6-96231b3b80d8