Silence useless compiler warning when passing AVFrame* instead of AVPicture*

to ff_msrle_decode()

Originally committed as revision 16915 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/aasc.c

@@ -83,7 +83,7 @@ static int aasc_decode_frame(AVCodecContext *avctx,
         }
         break;
     case 1:
-        ff_msrle_decode(avctx, &s->frame, 8, buf - 4, buf_size + 4);
+        ff_msrle_decode(avctx, (AVPicture*)&s->frame, 8, buf - 4, buf_size + 4);
         break;
     default:
         av_log(avctx, AV_LOG_ERROR, "Unknown compression type %d\n", compr);