vet: correct printf verb for type bool
vet: correct printf verb for type bool

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