MemRegion can refer to ASTContext without external help.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@110784 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Checker/CallAndMessageChecker.cpp b/lib/Checker/CallAndMessageChecker.cpp
index c619d75..3c9ddce 100644
--- a/lib/Checker/CallAndMessageChecker.cpp
+++ b/lib/Checker/CallAndMessageChecker.cpp
@@ -114,7 +114,7 @@
       : C(c), StoreMgr(storeMgr), MrMgr(mrMgr), store(s) {}
 
       bool Find(const TypedRegion *R) {
-        QualType T = R->getValueType(C);
+        QualType T = R->getValueType();
         if (const RecordType *RT = T->getAsStructureType()) {
           const RecordDecl *RD = RT->getDecl()->getDefinition();
           assert(RD && "Referred record has no definition");