clang-format: Determine "in" as a keyword in ObjC for loops more precisely

Before:
  for (int i = 0; i < in [a]; ++i) ..

After:
  for (int i = 0; i < in[a]; ++i) ..

Also do some related cleanups.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@234980 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed