fix code style
fix code style

hebihui/mysql,yonglehou/mysql,eXcomm/gomysql,hyperworks/mysql,springning/mysql,yyljlyy/mysql,zhgo/mysql,rafaeljusto/mysql,muthusubbu459/mysql,helight/helight_code,methane/mysql,nanata1115/mysql,Go-SQL-Driver/MySQL,netroby/mysql,VividCortex/mysql,henrylee2cn/mysql,wfxiang08/mysql,siriele/mysql,chinanjjohn2012/mysql,aperera/mysql,bookerzzz/mysql,segmentio/mysql,helight/helight_code,rlowe/mysql,bookerzzz/mysql,helight/helight_code,cxflag203/mysql,sunjian1/mysql,Vorstack/mysql,methane/mysql,helight/helight_code,helight/helight_code,LightKool/mysql-go,roth1002/mysql,go-sql-driver/mysql,helight/helight_code,Freeaqingme/golang-sql-driver-mysql,helight/helight_code,jockchou/mysql,beego/mysql,tmulchay/mysql,eklitzke/mysql,segmentio/mysql,helight/helight_code,dalinaum/go-mysql-driver,LightKool/mysql-go,helight/helight_code,joshuaprunier/mysql,cw2018/mysql,Frca/mysql,VividCortex/mysql