Make an invalid use of a default callback implementation return an error.

Commited in SoC by Bobby Bingham on 2007-08-18 01:45:42

Originally committed as revision 12071 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavfilter/defaults.c

@@ -98,8 +98,7 @@ int avfilter_default_config_output_link(AVFilterLink *link)
     } else {
         /* XXX: any non-simple filter which would cause this branch to be taken
          * really should implement its own config_props() for this link. */
-        link->w =
-        link->h = 0;
+        return -1;
     }
 
     return 0;