modem: Fix broken AUTH check for default values

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

diff --git a/src/hooks/zones/modem b/src/hooks/zones/modem
index 190f1a2fe12228f3c9a9e852956d4bb7d29ae8d5..1bb5efe2404221018b9157880e8826564972a47c 100644 (file)
--- a/src/hooks/zones/modem
+++ b/src/hooks/zones/modem
@@ -83,7 +83,9 @@ hook_check_settings() {
 
        assert isoneof BAUDRATE ${SERIAL_BAUDRATES}
 
-       isset AUTH && assert isoneof AUTH ${MODEM_ALLOWED_AUTH_METHODS}
+       if isset AUTH; then
+               assert isoneof AUTH ${MODEM_ALLOWED_AUTH_METHODS}
+       fi
 }
 
 hook_parse_cmdline() {