util/stringutil: Improve the aesthetics of code review (#6177)
util/stringutil: Improve the aesthetics of code review (#6177)


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