Mark Hindess 8df6e2d930 Fix crash reported by Simooon on #Slic3r.
Error was:

  Argument "" isn't numeric in subroutine entry at
    lib/Slic3r/GUI/OptionsGroup.pm line 392
2014-02-16 12:05:01 +00:00
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2013-08-29 11:48:58 +02:00
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