Expand the coverage of the warning for constants on the RHS of logical operands:

  return f() || -1;

where the user meant to write '|'.

This bootstraps without any additional warnings.

Patch by Richard Trieu.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@132327 91177308-0d34-0410-b5e6-96231b3b80d8