[freqtweak-user] Fix jack port selection on newer Ubuntu [PATCH]

[Wladimir <la...@gm...>]

L.S.,

Jack port selection seems to be broken on current Ubuntu. The bug also
exists when compiling from CVS.

I've reported the bug on launchpad here:
https://bugs.launchpad.net/ubuntu/+source/freqtweak/+bug/1350362

I'm not sure if freqtweak is still maintained (if not it would be
unfortunate, this is a great tool), but in any case, you can find the
patch to solve this problem attached.

Wladimir