Don't lazily compile functions that are immediately receded by '('.

src/preparser.h

Index: src/preparser.h
diff --git a/src/preparser.h b/src/preparser.h
index 536e6d4f431050037970bd725126f8e9569a48eb..66fad3bcbf6b51456577a0219748f2013c4fb1e8 100644
--- a/src/preparser.h
+++ b/src/preparser.h
@@ -144,7 +144,8 @@ class PreParser {
         scope_(NULL),
         stack_limit_(stack_limit),
         stack_overflow_(false),
-        allow_lazy_(true) { }
+        allow_lazy_(true),
+        parenthesized_function_(false) { }
 
   // Preparse the program. Only called in PreParseProgram after creating
   // the instance.
@@ -268,6 +269,7 @@ class PreParser {
   uintptr_t stack_limit_;
   bool stack_overflow_;
   bool allow_lazy_;
+  bool parenthesized_function_;
 };
 } }  // v8::preparser