ac97: quiet make W=1 noise by initializing all fields of snd_ac97_codec_id_vendors and snd_ac97_codec_ids.

From: Lionel Debroux
Date: Sun Jul 24 2011 - 05:40:54 EST


make W=1 bitterly complains about missing initializations in
snd_ac97_codec_id_vendors and snd_ac97_codec_ids.
Initialize the last field, to make the output of make W=1 more readable.

Patch against current Linus tree.

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