Experimental scanner: fix harmony flag setting.

src/parser.h

Index: src/parser.h
diff --git a/src/parser.h b/src/parser.h
index e546ec4bc9af10453032eb2803b54095a6c90888..e5024b931b2d5782fcdf1123e241a6b9a38f7f09 100644
--- a/src/parser.h
+++ b/src/parser.h
@@ -414,8 +414,6 @@ class Parser : public ParserBase {
   ~Parser() {
     delete reusable_preparser_;
     reusable_preparser_ = NULL;
-    delete scanner_;
-    scanner_ = NULL;
   }
 
   // Parses the source code represented by the compilation info and sets its
@@ -761,6 +759,8 @@ class Parser : public ParserBase {
     return current_function_state_->factory();
   }
 
+  void SetScannerFlags();
+
   Isolate* isolate_;
   ZoneList<Handle<String> > symbol_cache_;