[osg-submissions] Small fix to osgviewerFOX

[Mario Valle]

Added removeChore() call in the FOX_OSG_MDIView destructor to get rid of a Trace/BPT trap
error on exit on Linux. BTW this is suggested also in the FOX documentation.
Ciao!
		mario


-- 
Ing. Mario Valle
Visualization Group                              | http://www.cscs.ch/~mvalle
Swiss National Supercomputing Centre (CSCS)      | Tel:  +41 (91) 610.82.60
v. Cantonale Galleria 2, 6928 Manno, Switzerland | Fax:  +41 (91) 610.82.82
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