Correctly implement the CheckerVisit optimization introduced in r106884, but this time actually used the cached checker list when calling back to Checker visit methods.  This reduces the analysis time for sqlite3.c by 8%.

llvm-svn: 107259
diff --git a/clang/lib/Checker/GRExprEngine.cpp b/clang/lib/Checker/GRExprEngine.cpp
index c4bf969..7b4bfb9 100644
--- a/clang/lib/Checker/GRExprEngine.cpp
+++ b/clang/lib/Checker/GRExprEngine.cpp
@@ -204,7 +204,7 @@
   ExplodedNodeSet *PrevSet = &Src;
   unsigned checkersEvaluated = 0;
 
-  for (CheckersOrdered::iterator I=Checkers.begin(),E=Checkers.end(); I!=E;++I){
+  for (CheckersOrdered::iterator I=CO->begin(), E=CO->end(); I!=E; ++I){
     ExplodedNodeSet *CurrSet = 0;
     if (I+1 == E)
       CurrSet = &Dst;