mpd-configure: errors in detecting formats (regression) and samplerates for uac cards
*Created by: ronalde* In the quest for speeding up the script a serious error was introduced in 622a1feb29f3c0e202596e1e07e4ad0431164362 regarding the detection of supported encoding formats for uac interfaces. (see [comment #802](http://lacocina.nl/detect-alsa-output-capabilities#comment-802)).
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