Fixed: nib2cib of combo box parsed enabled state twice.
Fixed: nib2cib of combo box parsed enabled state twice.

It's sufficient to read the _enabled state in the superclass NSCell, no need to read it again in the subclass.

Refs #1868.

Dogild/cappuccino,koamac/Cappuccino,kidaa/cappuccino,mrcarlberg/cappuccino,cappuccino/cappuccino,zittix/cappuccino,krodelin/cappuccino,zittix/cappuccino,enquora/cappuccino,rgv151/cappuccino,zittix/cappuccino,wangshijin/cappuccino,primalmotion/cappuccino,koamac/Cappuccino,Dogild/cappuccino,tancred/cappuccino,koamac/Cappuccino,daboe01/cappuccino,enquora/cappuccino,mrcarlberg/cappuccino,Rosch/cappuccino,koamac/Cappuccino,cacaodev/cappuccino,rgv151/cappuccino,cappuccino/cappuccino,Rosch/cappuccino,primalmotion/cappuccino,wangshijin/cappuccino,FrankReh/cappuccino,primalmotion/cappuccino,deltaprojects/cappuccino,Rosch/cappuccino,deltaprojects/cappuccino,kidaa/cappuccino,AlexanderMazaletskiy/cappuccino,wangshijin/cappuccino,rgv151/cappuccino,mrcarlberg/cappuccino,tancred/cappuccino,rgv151/cappuccino,Rosch/cappuccino,enquora/cappuccino,zittix/cappuccino,cacaodev/cappuccino,AlexanderMazaletskiy/cappuccino,deltaprojects/cappuccino,FrankReh/cappuccino,koamac/Cappuccino,krodelin/cappuccino,mrcarlberg/cappuccino,zittix/cappuccino,primalmotion/cappuccino,FrankReh/cappuccino,rgv151/cappuccino,kidaa/cappuccino,krodelin/cappuccino,krodelin/cappuccino,daboe01/cappuccino,wangshijin/cappuccino,cappuccino/cappuccino,FrankReh/cappuccino,zittix/cappuccino,FrankReh/cappuccino,deltaprojects/cappuccino,kidaa/cappuccino,enquora/cappuccino,enquora/cappuccino,cappuccino/cappuccino,primalmotion/cappuccino,enquora/cappuccino,deltaprojects/cappuccino,cacaodev/cappuccino,rgv151/cappuccino,daboe01/cappuccino,kidaa/cappuccino,FrankReh/cappuccino,cacaodev/cappuccino,Dogild/cappuccino,tancred/cappuccino,Rosch/cappuccino,krodelin/cappuccino,Dogild/cappuccino,Rosch/cappuccino,FrankReh/cappuccino,cacaodev/cappuccino,mrcarlberg/cappuccino,daboe01/cappuccino,cappuccino/cappuccino,AlexanderMazaletskiy/cappuccino,deltaprojects/cappuccino,primalmotion/cappuccino,zittix/cappuccino,deltaprojects/cappuccino,krodelin/cappuccino,Rosch/cappuccino,mrcarlberg/cappuccino,FrankReh/cappuccino,Dogild/cappuccino,AlexanderMazaletskiy/cappuccino,cappuccino/cappuccino,mrcarlberg/cappuccino,AlexanderMazaletskiy/cappuccino,Dogild/cappuccino,wangshijin/cappuccino,rgv151/cappuccino,enquora/cappuccino,krodelin/cappuccino,daboe01/cappuccino,cacaodev/cappuccino,daboe01/cappuccino,tancred/cappuccino,primalmotion/cappuccino,cappuccino/cappuccino,cacaodev/cappuccino,kidaa/cappuccino,tancred/cappuccino,wangshijin/cappuccino,Dogild/cappuccino,daboe01/cappuccino,koamac/Cappuccino,AlexanderMazaletskiy/cappuccino,mrcarlberg/cappuccino,tancred/cappuccino