Fix a small bug when adding to an empty locked quark
Fix a small bug when adding to an empty locked quark

yanqingmen/Wapiti,yanqingmen/Wapiti,yanqingmen/Wapiti,Jekub/Wapiti,Neseb/wapiti,yanqingmen/Wapiti,Jekub/Wapiti,yanqingmen/Wapiti,Neseb/wapiti