Fix bug in keyed unarchiving.
Fix bug in keyed unarchiving.

Reviewed by me.

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