ADT/Triple: Switch to using .isOSDarwin() predicate.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@129823 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGException.cpp b/lib/CodeGen/CGException.cpp
index ac5fc22..614b42c 100644
--- a/lib/CodeGen/CGException.cpp
+++ b/lib/CodeGen/CGException.cpp
@@ -266,7 +266,7 @@
 /// when it really needs it.
 void CodeGenModule::SimplifyPersonality() {
   // For now, this is really a Darwin-specific operation.
-  if (Context.Target.getTriple().getOS() != llvm::Triple::Darwin)
+  if (Context.Target.getTriple().isOSDarwin())
     return;
 
   // If we're not in ObjC++ -fexceptions, there's nothing to do.