Reverting r119341:  doesn't compile, no obvious fix.

llvm-svn: 119342
diff --git a/clang/lib/Checker/GRCXXExprEngine.cpp b/clang/lib/Checker/GRCXXExprEngine.cpp
index 4984305..072c21e 100644
--- a/clang/lib/Checker/GRCXXExprEngine.cpp
+++ b/clang/lib/Checker/GRCXXExprEngine.cpp
@@ -66,7 +66,8 @@
 
 const CXXThisRegion *GRExprEngine::getCXXThisRegion(const CXXRecordDecl *D,
                                                  const StackFrameContext *SFC) {
-  QualType PT = D->getThisType(getContext());
+  Type *T = D->getTypeForDecl();
+  QualType PT = getContext().getPointerType(QualType(T, 0));
   return ValMgr.getRegionManager().getCXXThisRegion(PT, SFC);
 }