ITS#3820 fix olcReadOnly check

servers/slapd/bconfig.c

@@ -694,7 +694,8 @@ config_generic(ConfigArgs *c) {
 			if ( !c->rvalue_vals ) rc = 1;
 			break;
 		case CFG_RO:
-			c->value_int = (c->be->be_restrictops & SLAP_RESTRICT_OP_WRITES) != 0;
+			c->value_int = (c->be->be_restrictops & SLAP_RESTRICT_OP_WRITES) ==
+				SLAP_RESTRICT_OP_WRITES;
 			break;
 		case CFG_AZPOLICY:
 			c->value_string = ch_strdup( slap_sasl_getpolicy());