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/CodeGenModule.cpp b/lib/CodeGen/CodeGenModule.cpp
index 440fb47..39faee7 100644
--- a/lib/CodeGen/CodeGenModule.cpp
+++ b/lib/CodeGen/CodeGenModule.cpp
@@ -150,7 +150,7 @@
 }
 
 bool CodeGenModule::isTargetDarwin() const {
-  return getContext().Target.getTriple().getOS() == llvm::Triple::Darwin;
+  return getContext().Target.getTriple().isOSDarwin();
 }
 
 void CodeGenModule::Error(SourceLocation loc, llvm::StringRef error) {