Fixed: crash with CPRuleEditor when dragging the first row
Fixed: crash with CPRuleEditor when dragging the first row

Previously, cappuccinos crashed when dragging to the top the first row of a CPRuleEditor.

enquora/cappuccino,primalmotion/cappuccino,FrankReh/cappuccino,tancred/cappuccino,FrankReh/cappuccino,rgv151/cappuccino,mrcarlberg/cappuccino,FrankReh/cappuccino,rgv151/cappuccino,Rosch/cappuccino,wangshijin/cappuccino,daboe01/cappuccino,primalmotion/cappuccino,cappuccino/cappuccino,primalmotion/cappuccino,krodelin/cappuccino,mrcarlberg/cappuccino,krodelin/cappuccino,zittix/cappuccino,cappuccino/cappuccino,wangshijin/cappuccino,rgv151/cappuccino,cappuccino/cappuccino,FrankReh/cappuccino,primalmotion/cappuccino,Rosch/cappuccino,daboe01/cappuccino,mrcarlberg/cappuccino,daboe01/cappuccino,mrcarlberg/cappuccino,mrcarlberg/cappuccino,mrcarlberg/cappuccino,cappuccino/cappuccino,cappuccino/cappuccino,Rosch/cappuccino,Dogild/cappuccino,enquora/cappuccino,mrcarlberg/cappuccino,tancred/cappuccino,primalmotion/cappuccino,krodelin/cappuccino,Dogild/cappuccino,Rosch/cappuccino,daboe01/cappuccino,wangshijin/cappuccino,zittix/cappuccino,cappuccino/cappuccino,Dogild/cappuccino,daboe01/cappuccino,tancred/cappuccino,mrcarlberg/cappuccino,primalmotion/cappuccino,Dogild/cappuccino,enquora/cappuccino,rgv151/cappuccino,wangshijin/cappuccino,FrankReh/cappuccino,tancred/cappuccino,zittix/cappuccino,daboe01/cappuccino,enquora/cappuccino,FrankReh/cappuccino,cappuccino/cappuccino,krodelin/cappuccino,krodelin/cappuccino,FrankReh/cappuccino,Rosch/cappuccino,zittix/cappuccino,Rosch/cappuccino,enquora/cappuccino,daboe01/cappuccino,wangshijin/cappuccino,tancred/cappuccino,rgv151/cappuccino,rgv151/cappuccino,primalmotion/cappuccino,zittix/cappuccino,zittix/cappuccino,FrankReh/cappuccino,tancred/cappuccino,Rosch/cappuccino,rgv151/cappuccino,enquora/cappuccino,Dogild/cappuccino,zittix/cappuccino,Dogild/cappuccino,Dogild/cappuccino,krodelin/cappuccino,wangshijin/cappuccino,krodelin/cappuccino,enquora/cappuccino