compactor: Tiny clean up
compactor: Tiny clean up

pingcap/tidb,Cofyc/tidb,CodeRushing/tidb,liyu4/tidb,qiuyesuifeng/tidb,simon-xia/tidb,ngaut/tidb,ngaut/tidb,ngaut/tidb,netroby/tidb,zs634134578/tidb,zs634134578/tidb,qiuyesuifeng/tidb,Nify/tidb,c4pt0r/tidb,kyle-wang/tidb,mccxj/tidb,JinheLin/tidb,Nify/tidb,c4pt0r/tidb,pingcap/tidb,silentred/tidb,andelf/tidb,gaocegege/tidb,8cbx/tidb,simon-xia/tidb,anywhy/tidb,anywhy/tidb,qhsong/tidb,ueizhou/tidb,ming-relax/tidb,yangwenmai/tidb,mccxj/tidb,gaocegege/tidb,yuanwhy/tidb,louishust/tidb,astaxie/tidb,myrice/tidb,ngaut/tidb,c4pt0r/tidb,tiancaiamao/tidb,ngaut/tidb,XuHuaiyu/tidb,qhsong/tidb,kyle-wang/tidb,kyle-wang/tidb,louishust/tidb,ming-relax/tidb,silenceper/tidb,silentred/tidb,EvilMcJerkface/tidb,kyle-wang/tidb,CodeRushing/tidb,silenceper/tidb,coocood/tidb,netroby/tidb,zimulala/tidb,zimulala/tidb,pingcap/tidb,8cbx/tidb,astaxie/tidb,pingcap/tidb,kyle-wang/tidb,spongedu/tidb,Cofyc/tidb,wusphinx/tidb,spongedu/tidb,myrice/tidb,XuHuaiyu/tidb,c4pt0r/tidb,c4pt0r/tidb,pingcap/tidb,ngaut/tidb,tiancaiamao/tidb,andelf/tidb,cosmtrek/tidb,kyle-wang/tidb,pingcap/tidb,EvilMcJerkface/tidb,coocood/tidb,wusphinx/tidb,yuanwhy/tidb,liyu4/tidb,yangwenmai/tidb,JinheLin/tidb,ueizhou/tidb,cosmtrek/tidb,c4pt0r/tidb