Minor performance fix in transfer function logic. Previously we

called VisitStmt, but VisitChildren is more direct and creates less
boilerplate logic.

llvm-svn: 42110

clang/Analysis/UninitializedValues.cpp

@@ -159,7 +159,7 @@ bool TransferFuncs::VisitDeclStmt(DeclStmt* S) {
 }
 
 bool TransferFuncs::VisitCallExpr(CallExpr* C) {
-  VisitStmt(C);
+  VisitChildren(C);
   return Initialized();
 }