Make LeakSanitizer happy, part 1.

test/cctest/test-regexp.cc

 // Copyright 2012 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 521 matching lines @@
                     bool multiline,
                     bool is_ascii,
                     bool dot_output = false) {
   v8::HandleScope scope(CcTest::isolate());
   Zone zone(CcTest::i_isolate());
   RegExpNode* node = Compile(input, multiline, is_ascii, &zone);
   USE(node);
 #ifdef DEBUG
   if (dot_output) {
     RegExpEngine::DotPrint(input, node, false);
-    exit(0);
   }
 #endif  // DEBUG
 }
 
 
 class TestConfig {
  public:
   typedef int Key;
   typedef int Value;
   static const int kNoKey;
@@ skipping 1256 matching lines @@
   ZoneList<CharacterRange> first_only(4, &zone);
   ZoneList<CharacterRange> second_only(4, &zone);
   ZoneList<CharacterRange> both(4, &zone);
 }
 
 
 TEST(Graph) {
   V8::Initialize(NULL);
   Execute("\\b\\w+\\b", false, true, true);
 }