[ #63393 ] Fix some Krazy2 warnings

src/abstractitembackendmodelextension.cpp

src/abstractitembackendmodelextension.h

src/accountmodel.h

src/audio/alsapluginmodel.h

src/audio/inputdevicemodel.h

src/audio/managermodel.h

src/audio/outputdevicemodel.h

src/audio/ringtonedevicemodel.h

src/audio/settings.h

src/contact.h

src/extensions/presenceitembackendmodelextension.h

src/hookmanager.h

src/imconversationmanager.cpp

src/imconversationmanager.h

src/instantmessagingmodel.cpp

src/instantmessagingmodel.h

src/keyexchangemodel.cpp

src/keyexchangemodel.h

src/lastusednumbermodel.cpp

src/lastusednumbermodel.h