mp3: "tag" argument is unused when libid3tag is disabled

Add G_GNUC_UNUSED attributes.

mp3: "tag" argument is unused when libid3tag is disabled
fc723803 · Max Kellermann · 4716ef10 · fc723803
Commit fc723803 authored Dec 24, 2008 by Max Kellermann
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mp3_plugin.c src/decoder/mp3_plugin.c +2 -2

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--- a/src/decoder/mp3_plugin.c
+++ b/src/decoder/mp3_plugin.c
@@ -323,8 +323,8 @@ static void mp3_parse_id3(struct mp3_data *data, size_t tagsize,
 #endif
 static enum mp3_action
-decode_next_frame_header(struct mp3_data *data, struct tag **tag,
+decode_next_frame_header(struct mp3_data *data, G_GNUC_UNUSED struct tag **tag,
-			 struct replay_gain_info **replay_gain_info_r)
+			 G_GNUC_UNUSED struct replay_gain_info **replay_gain_info_r)
 {
 	enum mad_layer layer;