Add missed case

Author: kuhar

clang/lib/Parse/ParsePragma.cpp

@@ -1420,8 +1420,8 @@ bool Parser::HandlePragmaLoopHint(LoopHint &Hint) {
   // Return a valid hint if pragma unroll or nounroll were specified
   // without an argument.
   auto IsLoopHint = llvm::StringSwitch<bool>(PragmaNameInfo->getName())
-                        .Cases("unroll", "nounroll", "unroll_and_jam",
-                               "nounroll_and_jam", true)
+                        .Cases({"unroll", "nounroll", "unroll_and_jam",
+                               "nounroll_and_jam"}, true)
                         .Default(false);
 
   if (Toks.empty() && IsLoopHint) {