Fixed a bug where CPKeyedUnarchiver would incorrectly unarchive 0 as null.
Fixed a bug where CPKeyedUnarchiver would incorrectly unarchive 0 as null.

Reviewed by me.

primalmotion/cappuccino,enquora/cappuccino,enquora/cappuccino,Rosch/cappuccino,mrcarlberg/cappuccino,dgvivero/CappCoreData,kidaa/cappuccino,FrankReh/cappuccino,rgv151/cappuccino,Rosch/cappuccino,krodelin/cappuccino,rgv151/cappuccino,primalmotion/cappuccino,Dogild/cappuccino,FrankReh/cappuccino,deltaprojects/cappuccino,koamac/Cappuccino,Dogild/cappuccino,zittix/cappuccino,eventualbuddha/cappuccino,koamac/Cappuccino,FrankReh/cappuccino,Rosch/cappuccino,koamac/Cappuccino,Rosch/cappuccino,deltaprojects/cappuccino,cacaodev/cappuccino,deltaprojects/cappuccino,cacaodev/cappuccino,tancred/cappuccino,krodelin/cappuccino,cappuccino/cappuccino,Dogild/cappuccino,cacaodev/cappuccino,Dogild/cappuccino,Rosch/cappuccino,cappuccino/cappuccino,enquora/cappuccino,cappuccino/cappuccino,akshell/cappuccino,zittix/cappuccino,deltaprojects/cappuccino,AlexanderMazaletskiy/cappuccino,rgv151/cappuccino,deltaprojects/cappuccino,Dogild/cappuccino,dgvivero/CappCoreData,koamac/Cappuccino,tolmasky/cappuccino,tolmasky/cappuccino,mrcarlberg/cappuccino,rgv151/cappuccino,FrankReh/cappuccino,primalmotion/cappuccino,mrcarlberg/cappuccino,kidaa/cappuccino,deltaprojects/cappuccino,FrankReh/cappuccino,deltaprojects/cappuccino,tolmasky/cappuccino,tolmasky/cappuccino,mrcarlberg/cappuccino,280north/cappuccino,zittix/cappuccino,cappuccino/cappuccino,AlexanderMazaletskiy/cappuccino,wangshijin/cappuccino,kidaa/cappuccino,mrcarlberg/cappuccino,280north/cappuccino,krodelin/cappuccino,eventualbuddha/cappuccino,rgv151/cappuccino,Rosch/cappuccino,cappuccino/cappuccino,rgv151/cappuccino,primalmotion/cappuccino,280north/cappuccino,kidaa/cappuccino,tancred/cappuccino,cappuccino/cappuccino,koamac/Cappuccino,tancred/cappuccino,eventualbuddha/cappuccino,FrankReh/cappuccino,dgvivero/CappCoreData,enquora/cappuccino,enquora/cappuccino,cappuccino/cappuccino,zittix/cappuccino,eventualbuddha/cappuccino,wangshijin/cappuccino,daboe01/cappuccino,dgvivero/CappCoreData,mrcarlberg/cappuccino,dgvivero/CappCoreData,daboe01/cappuccino,daboe01/cappuccino,tancred/cappuccino,enquora/cappuccino,akshell/cappuccino,daboe01/cappuccino,wangshijin/cappuccino,wangshijin/cappuccino,cacaodev/cappuccino,zittix/cappuccino,FrankReh/cappuccino,zittix/cappuccino,wangshijin/cappuccino,krodelin/cappuccino,enquora/cappuccino,daboe01/cappuccino,koamac/Cappuccino,tancred/cappuccino,primalmotion/cappuccino,AlexanderMazaletskiy/cappuccino,tolmasky/cappuccino,kidaa/cappuccino,AlexanderMazaletskiy/cappuccino,kidaa/cappuccino,tancred/cappuccino,mrcarlberg/cappuccino,daboe01/cappuccino,Dogild/cappuccino,280north/cappuccino,daboe01/cappuccino,primalmotion/cappuccino,akshell/cappuccino,AlexanderMazaletskiy/cappuccino,wangshijin/cappuccino,cacaodev/cappuccino,FrankReh/cappuccino,akshell/cappuccino,mrcarlberg/cappuccino,280north/cappuccino,krodelin/cappuccino,primalmotion/cappuccino,Dogild/cappuccino,cacaodev/cappuccino,Rosch/cappuccino,zittix/cappuccino,rgv151/cappuccino,krodelin/cappuccino,cacaodev/cappuccino,krodelin/cappuccino,AlexanderMazaletskiy/cappuccino