fix show processlist (#7765)
fix show processlist (#7765)


tiancaiamao/tidb,kyle-wang/tidb,Cofyc/tidb,kyle-wang/tidb,ming-relax/tidb,XuHuaiyu/tidb,cosmtrek/tidb,EvilMcJerkface/tidb,coocood/tidb,ngaut/tidb,ngaut/tidb,kyle-wang/tidb,ngaut/tidb,pingcap/tidb,kyle-wang/tidb,EvilMcJerkface/tidb,cosmtrek/tidb,c4pt0r/tidb,c4pt0r/tidb,XuHuaiyu/tidb,pingcap/tidb,coocood/tidb,kyle-wang/tidb,qiuyesuifeng/tidb,c4pt0r/tidb,ngaut/tidb,pingcap/tidb,mccxj/tidb,qiuyesuifeng/tidb,c4pt0r/tidb,mccxj/tidb,tiancaiamao/tidb,ngaut/tidb,Cofyc/tidb,ngaut/tidb,c4pt0r/tidb,pingcap/tidb,c4pt0r/tidb,ming-relax/tidb,pingcap/tidb,kyle-wang/tidb,pingcap/tidb