dont let the demuxer thread die before the video has actually been played as...

dont let the demuxer thread die before the video has actually been played as seeking would become impossible shortly before EOF

Originally committed as revision 2705 to svn://svn.ffmpeg.org/ffmpeg/trunk

ffplay.c

@@ -1423,7 +1423,8 @@ static int decode_thread(void *arg)
 
         /* if the queue are full, no need to read more */
         if (is->audioq.size > MAX_AUDIOQ_SIZE ||
-            is->videoq.size > MAX_VIDEOQ_SIZE) {
+            is->videoq.size > MAX_VIDEOQ_SIZE || 
+            url_feof(&ic->pb)) {
             /* wait 10 ms */
             SDL_Delay(10);
             continue;