Fix integer comparison in DIEInteger::BestForm.

The always-true "(int)Int == (signed)Int" comparison was found
while experimenting with a potential new Clang warning.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177290 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed