mariadb-10.4.6/plugin/auth_pam/auth_pam.c:104]: (style) Suspicious condition

mariadb-10.4.6/plugin/auth_pam/auth_pam.c:104]: (style) Suspicious condition (assignment + comparison); Clarify expression with parentheses.

Source code is

if ((pkt_len= vio->read_packet(vio, &pkt) < 0))

Maybe better code:

if ((pkt_len = vio->read_packet(vio, &pkt)) < 0)