Use the allocator of ExplodedGraph. The whole static analysis module uses it.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59359 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/BasicStore.cpp b/lib/Analysis/BasicStore.cpp
index 16c35ea..4197c08 100644
--- a/lib/Analysis/BasicStore.cpp
+++ b/lib/Analysis/BasicStore.cpp
@@ -31,7 +31,10 @@
   
 public:
   BasicStoreManager(GRStateManager& mgr)
-    : StateMgr(mgr), MRMgr(StateMgr.getAllocator()), SelfRegion(0) {}
+    : VBFactory(mgr.getAllocator()), 
+      StateMgr(mgr), 
+      MRMgr(StateMgr.getAllocator()), 
+      SelfRegion(0) {}
   
   ~BasicStoreManager() {}