Re-enable disable free optimization where the FrontendAction is not freed when -disable-free is passed.  This accidentally was commited in r128011.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@130168 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/FrontendTool/ExecuteCompilerInvocation.cpp b/lib/FrontendTool/ExecuteCompilerInvocation.cpp
index 0f02f7a..664b533 100644
--- a/lib/FrontendTool/ExecuteCompilerInvocation.cpp
+++ b/lib/FrontendTool/ExecuteCompilerInvocation.cpp
@@ -149,8 +149,11 @@
   if (!Clang->getDiagnostics().hasErrorOccurred()) {
     // Create and execute the frontend action.
     llvm::OwningPtr<FrontendAction> Act(CreateFrontendAction(*Clang));
-    if (Act)
+    if (Act) {
       Success = Clang->ExecuteAction(*Act);
+      if (Clang->getFrontendOpts().DisableFree)
+        Act.take();
+    }
   }
 
   return Success;