libavformat/rtsp.c:1147: error: Uninitialized Value
  The value read from rtx was never initialized.

libavformat/rtsp.c:1147:44: 
1145.                 rtsp_st = rt->rtsp_streams[rtx];
1146.             } else
1147.                 rtsp_st = rt->rtsp_streams[i > rtx ? i : i - 1];
                                                 ^
1148.         } else
1149.             rtsp_st = rt->rtsp_streams[i];
