KeyTool: Fix hang when saving all keys
KeyTool: Fix hang when saving all keys

marineam/efitools,mjg59/efitools,msekletar/efitools,mjg59/efitools,msekletar/efitools,mjg59/efitools,msekletar/efitools,marineam/efitools,mjg59/efitools,msekletar/efitools,marineam/efitools,marineam/efitools