VideoState::queue_picture: ffmpeg expects a buffer of 4 pointers in sws_scale

extern/osg-ffmpeg-videoplayer/videostate.cpp

@@ -315,9 +315,9 @@ int VideoState::queue_picture(AVFrame *pFrame, double pts)
     vp->pts = pts;
     vp->data.resize((*this->video_st)->codec->width * (*this->video_st)->codec->height * 4);
 
-    uint8_t *dst = &vp->data[0];
+    uint8_t *dst[4] = { &vp->data[0], nullptr, nullptr, nullptr };
     sws_scale(this->sws_context, pFrame->data, pFrame->linesize,
-              0, (*this->video_st)->codec->height, &dst, this->rgbaFrame->linesize);
+              0, (*this->video_st)->codec->height, dst, this->rgbaFrame->linesize);
 
     // now we inform our display thread that we have a pic ready
     this->pictq_windex = (this->pictq_windex+1) % VIDEO_PICTURE_ARRAY_SIZE;