close mysql connection

session/mysql/sess_mysql.go

@@ -143,6 +143,7 @@ func (mp *Provider) SessionInit(maxlifetime int64, savePath string) error {
 // SessionRead get mysql session by sid
 func (mp *Provider) SessionRead(sid string) (session.Store, error) {
 	c := mp.connectInit()
+	defer c.Close()
 	row := c.QueryRow("select session_data from "+TableName+" where session_key=?", sid)
 	var sessiondata []byte
 	err := row.Scan(&sessiondata)
@@ -179,6 +180,7 @@ func (mp *Provider) SessionExist(sid string) bool {
 // SessionRegenerate generate new sid for mysql session
 func (mp *Provider) SessionRegenerate(oldsid, sid string) (session.Store, error) {
 	c := mp.connectInit()
+	defer c.Close()
 	row := c.QueryRow("select session_data from "+TableName+" where session_key=?", oldsid)
 	var sessiondata []byte
 	err := row.Scan(&sessiondata)