fix uncaught StopRequested during send heartbeat

rq/worker.py

@@ -466,8 +466,6 @@ class Worker(object):
                         if burst:
                             self.log.info("RQ worker {0!r} done, quitting".format(self.key))
                         break
-                except StopRequested:
-                    break
                         
                     job, queue = result
                     self.execute_job(job, queue)
@@ -475,6 +473,8 @@ class Worker(object):
                     
                     did_perform_work = True
                     
+                except StopRequested:
+                    break
         finally:
             if not self.is_horse:
                 self.register_death()