Make AVCodec long_names definition conditional depending on CONFIG_SMALL.

Originally committed as revision 13759 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/aasc.c

@@ -171,5 +171,5 @@ AVCodec aasc_decoder = {
     aasc_decode_end,
     aasc_decode_frame,
     CODEC_CAP_DR1,
-    .long_name = "Autodesk RLE",
+    .long_name = NULL_IF_CONFIG_SMALL("Autodesk RLE"),
 };