Fix VLA miscompilation.

llvm.stacksave/llvm.stackrestore wasn't emitted for VLAs in inner scopes.
Fixes r8403108.

llvm-svn: 113822
diff --git a/clang/lib/CodeGen/CodeGenFunction.h b/clang/lib/CodeGen/CodeGenFunction.h
index 37795ed..acf1e4d 100644
--- a/clang/lib/CodeGen/CodeGenFunction.h
+++ b/clang/lib/CodeGen/CodeGenFunction.h
@@ -562,6 +562,7 @@
     {
       CleanupStackDepth = CGF.EHStack.stable_begin();
       OldDidCallStackSave = CGF.DidCallStackSave;
+      CGF.DidCallStackSave = false;
     }
 
     /// \brief Exit this cleanup scope, emitting any accumulated