Fix crash issue when user clicked cancel in UAC prompt window.
Fix crash issue when user clicked cancel in UAC prompt window.

yozora-hitagi/Saber,apprentice3d/Wox,renzhn/Wox,EmuxEvans/Wox,Wox-launcher/Wox,18098924759/Wox,qianlifeng/Wox,Launchify/Launchify,mika76/Wox,JohnTheGr8/Wox,Wox-launcher/Wox,gnowxilef/Wox,apprentice3d/Wox,zlphoenix/Wox,apprentice3d/Wox,18098924759/Wox,kdar/Wox,JohnTheGr8/Wox,shangvven/Wox,lances101/Wox,medoni/Wox,sanbinabu/Wox,Megasware128/Wox,gnowxilef/Wox,derekforeman/Wox,derekforeman/Wox,dstiert/Wox,shangvven/Wox,shangvven/Wox,kdar/Wox,danisein/Wox,kayone/Wox,derekforeman/Wox,EmuxEvans/Wox,mika76/Wox,renzhn/Wox,qianlifeng/Wox,dstiert/Wox,medoni/Wox,dstiert/Wox,danisein/Wox,lances101/Wox,Launchify/Launchify,AlexCaranha/Wox,zlphoenix/Wox,vebin/Wox,mika76/Wox,EmuxEvans/Wox,yozora-hitagi/Saber,Megasware128/Wox,vebin/Wox,jondaniels/Wox,AlexCaranha/Wox,AlexCaranha/Wox,sanbinabu/Wox,vebin/Wox,gnowxilef/Wox,sanbinabu/Wox,kdar/Wox,qianlifeng/Wox,kayone/Wox,kayone/Wox,18098924759/Wox,jondaniels/Wox