openldap: use ldap_unbind_ext_s() to avoid memory leak

... as ldap_destroy() is only available in newer libldap versions.

diff --git a/src/openldap.c b/src/openldap.c
index 5a04578..7ce789f 100644 (file)
--- a/src/openldap.c
+++ b/src/openldap.c
@@ -94,7 +94,7 @@ static int ldap_init_host (ldap_t *st) /* {{{ */
                        ERROR ("openldap plugin: Failed to start tls on %s: %s",
                                        st->url, ldap_err2string (rc));
                        st->state = 0;
-                       ldap_destroy(st->ld);
+                       ldap_unbind_ext_s(st->ld, NULL, NULL);
                        return (-1);
                }
        }
@@ -109,7 +109,7 @@ static int ldap_init_host (ldap_t *st) /* {{{ */
                ERROR ("openldap plugin: Failed to bind to %s: %s",
                                st->url, ldap_err2string (rc));
                st->state = 0;
-               ldap_destroy(st->ld);
+               ldap_unbind_ext_s(st->ld, NULL, NULL);
                return (-1);
        }
        else