undefined symbol: dc_descriptor_iterator

[Salvador Cuñat]

Hellow.

Since yesterday I'm getting the mentioned error while trying to download a dive from the
dc:

"./subsurface: symbol lookup error: ./subsurface: undefined symbol:
dc_descriptor_iterator"

by, simply, clicking the "Download from Dive Computer" option, even when
there isn't a dc connected.

I'm getting it in both GTK and QT branches.

Best regards.

Salva.