[wmii] Bug resize windows in floating mode

Hi,
there is a bug in resize handling of the resize mode with
floating windows. If you resize a window via keys the wmii
will crash or behave strange if you try to size it in a
negative direction (make it smaller than it could be).

Regards Nico

-- 
Nico Golde - JAB: nion_AT_jabber.ccc.de | GPG: 0x73647CFF
http://www.ngolde.de | http://www.muttng.org | http://grml.org
Forget about that mouse with 3/4/5 buttons -
gimme a keyboard with 103/104/105 keys!