Fix regression test after r10770.

test/cctest/test-regexp.cc

 // Copyright 2008 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 431 matching lines @@
   switch (c) {
     case 0x09:
     case 0x0A:
     case 0x0B:
     case 0x0C:
     case 0x0d:
     case 0x20:
     case 0xA0:
     case 0x2028:
     case 0x2029:
+    case 0xFEFF:
       return true;
     default:
       return unibrow::Space::Is(c);
   }
 }
 
 
 static bool NotWhiteSpace(uc16 c) {
   return !IsWhiteSpace(c);
 }
@@ skipping 1363 matching lines @@
     bool in_second = CharacterInSet(&l2, i);
     CHECK((in_first || in_second) == CharacterInSet(&all, i));
   }
 }
 
 
 TEST(Graph) {
   V8::Initialize(NULL);
   Execute("\\b\\w+\\b", false, true, true);
 }