[OpenSIPS-Devel] [OpenSIPS/opensips] 90756e: auth: fix error check

[Zero King]

  Branch: refs/heads/2.4
  Home:   https://github.com/OpenSIPS/opensips
  Commit: 90756ea15aeaf3f6d3846a211fe7897a1f8fe67a
      https://github.com/OpenSIPS/opensips/commit/90756ea15aeaf3f6d3846a211fe7897a1f8fe67a
  Author: Zero King <l2dy at icloud.com>
  Date:   2020-03-12 (Thu, 12 Mar 2020)

  Changed paths:
    M modules/auth/auth_mod.c

  Log Message:
  -----------
  auth: fix error check

auth_get_ha1() returns 1 on error.

(cherry picked from commit b7772a087e4bf5c57fa4655d9fd53e074ca4247e)