Support WMA Lossless with recent enough libavcodec

(cherry picked from commit bc368cb418feb3c5ce8a1afd1699cad3fbf00acf)
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

modules/codec/avcodec/fourcc.c

@@ -397,6 +397,10 @@ static const struct
     { VLC_CODEC_TRUEHD, CODEC_ID_TRUEHD, AUDIO_ES },
     { VLC_CODEC_MLP, CODEC_ID_MLP, AUDIO_ES },
 
+#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT( 54, 5, 0 )
+    { VLC_CODEC_WMAL, CODEC_ID_WMALOSSLESS, AUDIO_ES },
+#endif
+
 
     /* PCM */
     { VLC_CODEC_S8, CODEC_ID_PCM_S8, AUDIO_ES },