cleaned up some shadow variable warnings.
cleaned up some shadow variable warnings.

dannys42/WYPopoverController,iv-mexx/WYPopoverController,netcosports/WYPopoverController,vitalys/WYPopoverController,lijie121210/WYPopoverController,appone/WYPopoverController,Eveian/WYPopoverController,Mindera/WYPopoverController,Medium/WYPopoverController,brittonmobile/WYPopoverController,huntit/WYPopoverController,Voxer/WYPopoverController,pinkowitz/WYPopoverController,orta/WYPopoverController,nicolaschengdev/WYPopoverController,Kingside/WYPopoverController,xswm1123/WYPopoverController,jiamaozheng/WYPopoverController,sammcewan/WYPopoverController,CODE4APPLE/WYPopoverController,thelearningclinic/WYPopoverController,richiewoo/WYPopoverController