tabbar: fix undefined index
tabbar: fix undefined index

airyland/vux,greedying/vux,airyland/vux,szgxwj/vux,szgxwj/vux,szgxwj/vux,greedying/vux,huixt/hxvux,greedying/vux,airyland/vux,huixt/hxvux,huixt/hxvux