fix rows init

connection.go

@@ -199,7 +199,7 @@ func (mc *mysqlConn) Query(query string, args []driver.Value) (driver.Rows, erro
 			var resLen int
 			resLen, err = mc.readResultSetHeaderPacket()
 			if err == nil {
-				rows := &mysqlRows{mc, false, nil, false}
+				rows := &mysqlRows{mc, nil, false, false}
 
 				if resLen > 0 {
 					// Columns
@@ -226,7 +226,7 @@ func (mc *mysqlConn) getSystemVar(name string) ([]byte, error) {
 	// Read Result
 	resLen, err := mc.readResultSetHeaderPacket()
 	if err == nil {
-		rows := &mysqlRows{mc, false, nil, false}
+		rows := &mysqlRows{mc, nil, false, false}
 
 		if resLen > 0 {
 			// Columns

statement.go

@@ -84,7 +84,7 @@ func (stmt *mysqlStmt) Query(args []driver.Value) (driver.Rows, error) {
 		return nil, err
 	}
 
-	rows := &mysqlRows{mc, true, nil, false}
+	rows := &mysqlRows{mc, nil, true, false}
 
 	if resLen > 0 {
 		// Columns