Fix arg error check (was expecting too many).

build/mac/generate_localizer

 #!/usr/bin/python
 
 # Copyright (c) 2009 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # Usage: generate_localizer [xib_path] [output_dot_h_path] [output_dot_mm_path]
 #
 # Extracts all the localizable strings that start with "^IDS" from the given
 # xib file, and then generates a localizer to process those strings.
@@ skipping 77 matching lines @@
   }
   h_file = localizer_template_h % values_dict
   return h_file
 
 
 def Main(argv=None):
   global generate_localizer
   generate_localizer = os.path.basename(argv[0])
 
   # Args
-  if len(argv) < 4:
+  if len(argv) < 3:
     sys.stderr.write('%s:0: error: Expected output file and then xibs\n' %
                      generate_localizer);
     return 1
   output_path = argv[1];
   xib_paths = argv[2:]
 
   full_constants_list = []
   for xib_path in xib_paths:
     # Run ibtool and convert to something Python can deal with
     plist_string = xib_localizable_strings(xib_path)
@@ skipping 15 matching lines @@
 
   # Write out the file
   file_fd = open(output_path, 'w')
   file_fd.write(h_file_content)
   file_fd.close()
 
   return 0
 
 if __name__ == '__main__':
   sys.exit(Main(sys.argv))