Skip all id3tag in the demuxer, not just the first one.
Skip all id3tag in the demuxer, not just the first one.

Some audio file can contains severall id3tag. Apple use it to insert a
jpeg in an audio only stream to display an image. So just iterate others
all id3tag, and discard them.

Signed-off-by: Rémi Denis-Courmont <f0699137713be92736351a0674e79536595e4a60@remlab.net>

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