bug fix record file thread quit dup pkt

zhangmeng

2019-08-01 f6172eaa5f78d2af04e8e99fdf26b2b0ad4994d6

 csrc/ffmpeg/format/FormatIn.hpp

@@ -63,7 +63,7 @@
      AVIOContext         *io_ctx_;
      uint8_t          *read_io_buff_;
      const int          read_io_buff_size_;
      GB28181API         handle_gb28181;
      GB28181API         *handle_gb28181;
   };
}