Only provide explicit getCapturedRegion() and getOriginalRegion() from referenced_vars_iterator.

This is a nice conceptual cleanup.

llvm-svn: 169480
diff --git a/clang/lib/StaticAnalyzer/Checkers/MallocChecker.cpp b/clang/lib/StaticAnalyzer/Checkers/MallocChecker.cpp
index 4df15253..6d48f02 100644
--- a/clang/lib/StaticAnalyzer/Checkers/MallocChecker.cpp
+++ b/clang/lib/StaticAnalyzer/Checkers/MallocChecker.cpp
@@ -1204,7 +1204,7 @@
   MemRegionManager &MemMgr = C.getSValBuilder().getRegionManager();
 
   for ( ; I != E; ++I) {
-    const VarRegion *VR = *I;
+    const VarRegion *VR = I.getCapturedRegion();
     if (VR->getSuperRegion() == R) {
       VR = MemMgr.getVarRegion(VR->getDecl(), LC);
     }