avformat/caf: Deduplicate codec tags list

Also saves a relocation.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>

libavformat/caf.c

@@ -78,3 +78,4 @@ const AVCodecTag ff_codec_caf_tags[] = {
     { AV_CODEC_ID_NONE,            0 },
 };
 
+const AVCodecTag *const ff_caf_codec_tags_list[] = { ff_codec_caf_tags, NULL };

libavformat/caf.h

@@ -30,5 +30,6 @@
 #include "internal.h"
 
 extern const AVCodecTag ff_codec_caf_tags[];
+extern const AVCodecTag *const ff_caf_codec_tags_list[];
 
 #endif /* AVFORMAT_CAF_H */

libavformat/cafdec.c

@@ -460,5 +460,5 @@ AVInputFormat ff_caf_demuxer = {
     .read_header    = read_header,
     .read_packet    = read_packet,
     .read_seek      = read_seek,
-    .codec_tag      = (const AVCodecTag* const []){ ff_codec_caf_tags, 0 },
+    .codec_tag      = ff_caf_codec_tags_list,
 };

libavformat/cafenc.c

@@ -274,5 +274,5 @@ AVOutputFormat ff_caf_muxer = {
     .write_header   = caf_write_header,
     .write_packet   = caf_write_packet,
     .write_trailer  = caf_write_trailer,
-    .codec_tag      = (const AVCodecTag* const []){ff_codec_caf_tags, 0},
+    .codec_tag      = ff_caf_codec_tags_list,
 };