fix disconnect event emitting when enabling reconn, #71

When enabling auto reconn, it should emit a disconnect event
when starting to reconnect.

src/client.c

@@ -267,6 +267,7 @@ void pc_client_stop(pc_client_t *client) {
       return;
     }
 
+    pc_emit_event(client, PC_EVENT_DISCONNECT, NULL);
     pc__client_reconnect(client);
     return;
   }