quickshift: fixes garbage memory bug
quickshift: fixes garbage memory bug

rxl194/vlfeat,mylxiaoyi/vlfeat,rxl194/vlfeat,hongzhili/vlfeat,CansenJIANG/vlfeat,richarddzh/vlfeat,qubick/vlfeat,j-bo/vlfeat,j-bo/vlfeat,WangDequan/vlfeat,richarddzh/vlfeat,rxl194/vlfeat,CansenJIANG/vlfeat,rxl194/vlfeat,rxl194/vlfeat,erexhepa/vlfeat,qubick/vlfeat,cvfish/vlfeat,erexhepa/vlfeat,erexhepa/vlfeat,WangDequan/vlfeat,richarddzh/vlfeat,mylxiaoyi/vlfeat,mylxiaoyi/vlfeat,hongzhili/vlfeat,vlfeat/vlfeat,CansenJIANG/vlfeat,qubick/vlfeat,richarddzh/vlfeat,qubick/vlfeat,WangDequan/vlfeat,CansenJIANG/vlfeat,CansenJIANG/vlfeat,cvfish/vlfeat,mylxiaoyi/vlfeat,erexhepa/vlfeat,cvfish/vlfeat,mylxiaoyi/vlfeat,cvfish/vlfeat,erexhepa/vlfeat,j-bo/vlfeat,hongzhili/vlfeat,qubick/vlfeat,rxl194/vlfeat,CansenJIANG/vlfeat,hongzhili/vlfeat,hongzhili/vlfeat,vlfeat/vlfeat,vlfeat/vlfeat,vlfeat/vlfeat,vlfeat/vlfeat,WangDequan/vlfeat,mylxiaoyi/vlfeat,richarddzh/vlfeat,richarddzh/vlfeat,vlfeat/vlfeat,WangDequan/vlfeat,j-bo/vlfeat,erexhepa/vlfeat,hongzhili/vlfeat,j-bo/vlfeat,qubick/vlfeat,cvfish/vlfeat,cvfish/vlfeat,WangDequan/vlfeat