Fix DiagnoseBitwisePrecedence so it doesn't cast "-1" to the type
BinaryOperator::Opcode.  This is bad form, and the behavior of the static_cast
in this case is unspecified according to the standard.

Fixes a warning that showed up from r167992 on self-host.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168010 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed