Make the "has function literal" default value for loops conservative....

src/rewriter.cc

 // Copyright 2006-2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 82 matching lines @@
 }
 
 
 void AstOptimizer::VisitLoopStatement(LoopStatement* node) {
   if (node->init() != NULL) {
     Visit(node->init());
   }
   if (node->cond() != NULL) {
     has_function_literal_ = false;
     Visit(node->cond());
-    node->has_function_literal_ = has_function_literal_;
+    node->may_have_function_literal_ = has_function_literal_;
   }
   if (node->body() != NULL) {
     Visit(node->body());
   }
   if (node->next() != NULL) {
     Visit(node->next());
   }
 }
 
 
@@ skipping 687 matching lines @@
       if (optimizer.HasStackOverflow()) {
         return false;
       }
     }
   }
   return true;
 }
 
 
 } }  // namespace v8::internal