Fix issue in previous test optimization

src/regexp.js

 // Copyright 2006-2009 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 283 matching lines @@
   }
 
   // Remove irrelevant preceeding '.*' in a test regexp. The expression  
   // checks whether this.source starts with '.*' and that the third 
   // char is not a '?'
   if (%_StringCharCodeAt(this.source,0) == 46 && // '.'
       %_StringCharCodeAt(this.source,1) == 42 && // '*' 
       %_StringCharCodeAt(this.source,2) != 63) { // '?' 
     if (!%_ObjectEquals(regexp_key, this)) {
       regexp_key = this; 
-      regexp_val = new $RegExp(this.source.substring(2,
-                                                     this.source.length - 2),
+      regexp_val = new $RegExp(this.source.substring(2, this.source.length),
                                (this.global ? 'g' : '')
                                + (this.ignoreCase ? 'i' : '')
                                + (this.multiline ? 'm' : ''));
     }
     if (!regexp_val.test(s)) return false;
   }
   
   var length = s.length;
   var i = this.global ? TO_INTEGER(lastIndex) : 0;
 
@@ skipping 222 matching lines @@
   %DefineAccessor($RegExp, "$'", SETTER, NoOpSetter, DONT_ENUM | DONT_DELETE);
 
   for (var i = 1; i < 10; ++i) {
     %DefineAccessor($RegExp, '$' + i, GETTER, RegExpMakeCaptureGetter(i), DONT_DELETE);
     %DefineAccessor($RegExp, '$' + i, SETTER, NoOpSetter, DONT_DELETE);
   }
 }
 
 
 SetupRegExp();