Add G.722 to RIFF codec list

Originally committed as revision 25837 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavformat/riff.c

@@ -292,6 +292,7 @@ const AVCodecTag ff_codec_wav_tags[] = {
     { CODEC_ID_WMALOSSLESS,     0x0163 },
     { CODEC_ID_ADPCM_CT,        0x0200 },
     { CODEC_ID_ATRAC3,          0x0270 },
+    { CODEC_ID_ADPCM_G722,      0x028F },
     { CODEC_ID_IMC,             0x0401 },
     { CODEC_ID_GSM_MS,          0x1500 },
     { CODEC_ID_TRUESPEECH,      0x1501 },