avformat/g726: Deduplicate AVClasses

The child_class_next API relied on different (de)muxers to use
different AVClasses; yet this API has been replaced by
child_class_iterate.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

libavformat/g726.c

@@ -65,33 +65,26 @@ static const AVOption options[] = {
     { NULL },
 };
 
-#if CONFIG_G726_DEMUXER
+static const AVClass g726_demuxer_class = {
-static const AVClass g726le_demuxer_class = {
+    .class_name     = "G.726 demuxer",
-    .class_name     = "G.726 big-endian demuxer",
     .item_name      = av_default_item_name,
     .option         = options,
     .version        = LIBAVUTIL_VERSION_INT,
 };
 
+#if CONFIG_G726_DEMUXER
 const AVInputFormat ff_g726_demuxer = {
     .name           = "g726",
     .long_name      = NULL_IF_CONFIG_SMALL("raw big-endian G.726 (\"left aligned\")"),
     .read_header    = g726_read_header,
     .read_packet    = g726_read_packet,
     .priv_data_size = sizeof(G726Context),
-    .priv_class     = &g726le_demuxer_class,
+    .priv_class     = &g726_demuxer_class,
     .raw_codec_id   = AV_CODEC_ID_ADPCM_G726,
 };
 #endif
 
 #if CONFIG_G726LE_DEMUXER
-static const AVClass g726_demuxer_class = {
-    .class_name     = "G.726 little-endian demuxer",
-    .item_name      = av_default_item_name,
-    .option         = options,
-    .version        = LIBAVUTIL_VERSION_INT,
-};
-
 const AVInputFormat ff_g726le_demuxer = {
     .name           = "g726le",
     .long_name      = NULL_IF_CONFIG_SMALL("raw little-endian G.726 (\"right aligned\")"),