[Patch-gnuradio] Bugfix for prefs.py

[Martin Braun (CEL)]

Hi,

this addresses the bug Tommy discovered and removes a cause for
unnecessary GR apps crashing.

MB
-- 
Karlsruhe Institute of Technology (KIT)
Communications Engineering Lab (CEL)

Dipl.-Ing. Martin Braun
Research Associate

Kaiserstraße 12
Building 05.01
76131 Karlsruhe

Phone: +49 721 608-43790
Fax: +49 721 608-46071
www.cel.kit.edu

KIT -- University of the State of Baden-Württemberg and
National Laboratory of the Helmholtz Association

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