winealsa: snd_card_get_name uses strdup (Valgrind).

[Joerg-Cyril.Hoehle at t-systems.com]

Hi,

Valgrind found this.  ALSA doesn't document anything, but it's in the ALSA source.
Also, the char ** is a hint towards strdup or the like.  If the string were statically
somewhere in alsa, they'd use a simple char*, like for that other snd_info_get_name function.

BTW, Valgrind also complains about that other ALSA functions, and it
looks like there was a patch to ALSA in 2010 to fix it (I've used Ubuntu
Lucid here, too old for that).

@Andrew, would you mind including this snippet in your current ALSA documentation improvement work?

Regards,
 Jörg Höhle
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