Change __has_feature(objc_diagnose_if_attr) to __has_feature(attribute_diagnose_if_objc) for consistency with rest of attribute checks.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@303713 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed