Reduce the score for the aea demuxer probing function.

Originally committed as revision 23273 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavformat/aea.c

@@ -48,7 +48,7 @@ static int aea_read_probe(AVProbeData *p)
          * the info bytes have to be the same
          */
         if (bsm_s == bsm_e && inb_s == inb_e)
-            return AVPROBE_SCORE_MAX / 2 + 1;
+            return AVPROBE_SCORE_MAX / 4 + 1;
     }
     return 0;
 }