Fix typo in error in aplay.c

[GitHub pull_request - opened <github@xxxxxxxxxxxxxxxx>]

alsa-project/alsa-utils pull request #143 was opened from mb720:

Hi and thanks a lot for ALSA!

I'd like to provide a fix for a typo I just came across while using arecord.

Request URL   : https://github.com/alsa-project/alsa-utils/pull/143
Patch URL     : https://github.com/alsa-project/alsa-utils/pull/143.patch
Repository URL: https://github.com/alsa-project/alsa-utils