streamsynchronizer: don't shadow function parameter

gst/playback/gststreamsynchronizer.c

@@ -454,16 +454,15 @@ gst_stream_synchronizer_sink_event (GstPad * pad, GstObject * parent,
         /* if EOS, but no data has passed, then send something to replace EOS
          * for preroll purposes */
         if (!seen_data) {
-          GstEvent *event;
+          GstEvent *gap_event;
 
-          event = gst_event_new_gap (0, 0);
-          gst_pad_push_event (srcpad, event);
+          gap_event = gst_event_new_gap (0, 0);
+          gst_pad_push_event (srcpad, gap_event);
         }
       }
       gst_object_unref (srcpad);
       gst_event_unref (event);
       goto done;
-      break;
     }
     default:
       break;