Replace "#if __clang__" by "#if __has_feature(attribute_analyzer_noreturn)" to be consistent with all other snippets on this page.

Patch by Jean-Daniel Dupas!

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@118603 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed