Set subtitle type in DVD and XSUB subtitle decoders.

Patch by Janne Grunau <ja?ne-f?mpeg jannau net>.

Originally committed as revision 19512 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/dvdsubdec.c

@@ -353,6 +353,7 @@ static int decode_dvd_subtitles(AVSubtitle *sub_header,
                 sub_header->rects[0]->y = y1;
                 sub_header->rects[0]->w = w;
                 sub_header->rects[0]->h = h;
+                sub_header->rects[0]->type = SUBTITLE_BITMAP;
                 sub_header->rects[0]->pict.linesize[0] = w;
             }
         }

libavcodec/xsubdec.c

@@ -91,6 +91,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size,
     av_freep(&sub->rects[0]->pict.data[0]);
     sub->rects[0]->x = x; sub->rects[0]->y = y;
     sub->rects[0]->w = w; sub->rects[0]->h = h;
+    sub->rects[0]->type = SUBTITLE_BITMAP;
     sub->rects[0]->pict.linesize[0] = w;
     sub->rects[0]->pict.data[0] = av_malloc(w * h);
     sub->rects[0]->nb_colors = 4;