Make use of the parameter in Sema::ActOnObjCTemporaryExitContainerContext.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@143088 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaDecl.cpp b/lib/Sema/SemaDecl.cpp
index 4fa9cbd..5f26c31 100644
--- a/lib/Sema/SemaDecl.cpp
+++ b/lib/Sema/SemaDecl.cpp
@@ -8288,7 +8288,8 @@
 }
 
 void Sema::ActOnObjCTemporaryExitContainerContext(DeclContext *DC) {
-  OriginalLexicalContext = CurContext;
+  assert(DC == CurContext && "Mismatch of container contexts");
+  OriginalLexicalContext = DC;
   ActOnObjCContainerFinishDefinition();
 }