Fix bug in collector.

src/preparser.h

 // Copyright 2011 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 43 matching lines @@
 // That means that contextual checks (like a label being declared where
 // it is used) are generally omitted.
 
 namespace i = v8::internal;
 
 class DuplicateFinder {
  public:
   explicit DuplicateFinder(i::UnicodeCache* constants)
       : unicode_constants_(constants),
         backing_store_(16),
-        map_(new i::HashMap(&Match)) { }
-
-  ~DuplicateFinder() {
-    delete map_;
-  }
+        map_(&Match) { }
 
   int AddAsciiSymbol(i::Vector<const char> key, int value);
   int AddUC16Symbol(i::Vector<const uint16_t> key, int value);
   // Add a a number literal by converting it (if necessary)
   // to the string that ToString(ToNumber(literal)) would generate.
   // and then adding that string with AddAsciiSymbol.
   // This string is the actual value used as key in an object literal,
   // and the one that must be different from the other keys.
   int AddNumber(i::Vector<const char> key, int value);
 
@@ skipping 15 matching lines @@
   // form.
   static bool IsNumberCanonical(i::Vector<const char> key);
 
   // Size of buffer. Sufficient for using it to call DoubleToCString in
   // from conversions.h.
   static const int kBufferSize = 100;
 
   i::UnicodeCache* unicode_constants_;
   // Backing store used to store strings used as hashmap keys.
   i::SequenceCollector<unsigned char> backing_store_;
-  i::HashMap* map_;
+  i::HashMap map_;
   // Buffer used for string->number->canonical string conversions.
   char number_buffer_[kBufferSize];
 };
 
 
 class PreParser {
  public:
   enum PreParseResult {
     kPreParseStackOverflow,
     kPreParseSuccess
@@ skipping 495 matching lines @@
   i::Scanner::Location strict_mode_violation_location_;
   const char* strict_mode_violation_type_;
   bool stack_overflow_;
   bool allow_lazy_;
   bool parenthesized_function_;
   bool harmony_block_scoping_;
 };
 } }  // v8::preparser
 
 #endif  // V8_PREPARSER_H