[rebaseline.py] Quit LogToServer thread immediately on exception

Tools/Scripts/webkitpy/tool/commands/rebaseline.py

 # Copyright (c) 2010 Google Inc. 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
@@ skipping 904 matching lines @@
         log_thread = threading.Thread(name='LogToServer', target=self._log_to_server_thread)
         log_thread.start()
         try:
             old_branch_name = self._tool.scm().current_branch()
             self._run_logged_command(['git', 'pull'])
             rebaseline_command = [self._tool.filesystem.join(self._tool.scm().checkout_root, 'Tools', 'Scripts', 'webkit-patch'), 'auto-rebaseline']
             if self._verbose:
                 rebaseline_command.append('--verbose')
             self._run_logged_command(rebaseline_command)
         except:
+            self._log_queue.put(self.QUIT_LOG)
             traceback.print_exc(file=sys.stderr)
             # Sometimes git crashes and leaves us on a detached head.
             self._tool.scm().checkout_branch(old_branch_name)
-        self._log_queue.put(self.QUIT_LOG)
+        else:
+            self._log_queue.put(self.QUIT_LOG)
         log_thread.join()
 
     def execute(self, options, args, tool):
         self._verbose = options.verbose
         while True:
             self._do_one_rebaseline()
             time.sleep(self.SLEEP_TIME_IN_SECONDS)