Rename: StripCasts describes what it does better. 
getBaseRegion will be used in another method.

llvm-svn: 86649
diff --git a/clang/lib/Analysis/RegionStore.cpp b/clang/lib/Analysis/RegionStore.cpp
index 8106260..91769cd 100644
--- a/clang/lib/Analysis/RegionStore.cpp
+++ b/clang/lib/Analysis/RegionStore.cpp
@@ -461,7 +461,7 @@
   ASTContext& Ctx = StateMgr.getContext();
 
   // Strip away casts.
-  R = R->getBaseRegion();
+  R = R->StripCasts();
 
   // Get the mapping of regions -> subregions.
   llvm::OwningPtr<RegionStoreSubRegionMap>