luci-mod-network: dhcp.js: allow lease hostname to be empty

Signed-off-by: Jo-Philipp Wich <jo@mein.io>
(cherry picked from commit 57f27cf7f803cf1f788f6b3edb103c138aaa92f9)

diff --git a/modules/luci-mod-network/htdocs/luci-static/resources/view/network/dhcp.js b/modules/luci-mod-network/htdocs/luci-static/resources/view/network/dhcp.js
index f58adc93a54848af090371a3353a5e456b97c8ab..6693dc0eacf4868a8900da94889b8a8dee4293d8 100644 (file)
--- a/modules/luci-mod-network/htdocs/luci-static/resources/view/network/dhcp.js
+++ b/modules/luci-mod-network/htdocs/luci-static/resources/view/network/dhcp.js
@@ -66,6 +66,9 @@ CBILease6Status = form.DummyValue.extend({
 });
 
 function validateHostname(sid, s) {
+       if (s == null || s == '')
+               return true;
+
        if (s.length > 256)
                return _('Expecting: %s').format(_('valid hostname'));