Experimental parser: build fix

src/lexer/lexer-shell.cc

 // Copyright 2013 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 62 matching lines @@
   }
   fclose(file);
   return chars;
 }
 
 class BaselineScanner {
  public:
   BaselineScanner(const char* fname,
                   Isolate* isolate,
                   Encoding encoding,
-                  ElapsedTimer* timer) {
+                  ElapsedTimer* timer)
+      : stream_(NULL) {
     int length = 0;
     source_ = ReadFile(fname, isolate, &length);
     unicode_cache_ = new UnicodeCache();
     scanner_ = new Scanner(unicode_cache_);
     switch (encoding) {
       case ASCII:
       case UTF8:
         stream_ = new Utf8ToUtf16CharacterStream(source_, length);
         break;
       case UTF16: {
@@ skipping 187 matching lines @@
         printf("Baseline    : %.3f ms\n", baseline_time.InMillisecondsF());
       }
       if (run_experimental) {
         printf("Experimental: %.3f ms\n", experimental_time.InMillisecondsF());
       }
     }
   }
   v8::V8::Dispose();
   return 0;
 }