播放流结束时，出现偶现崩溃问题

[TravelWind]

x0675D285 处(位于 VideoCenter.exe 中)引发的异常: 0xC0000005: 执行位置 0x0675D285 时发生访问冲突。 定位到 h264_decoder_impl.cc 383行 377| VideoFrame cropped_frame( 378| cropped_buf, video_frame->timestamp(), video_frame->render_time_ms(), 379| video_frame->rotation()); 380| // TODO(nisse): Timestamp and rotation are all zero here. Change decoder 381| // interface to pass a VideoFrameBuffer instead of a VideoFrame? 382| ret = decoded_image_callback_->Decoded(cropped_frame);

383| } else {

384| // Return decoded frame. 385| ret = decoded_image_callback_->Decoded(*video_frame); 386| } 387| // Stop referencing it, possibly freeing |video_frame|. 388| av_frame_unref(av_frame_.get()); 389| video_frame = nullptr;