luci-app-firewall: tools.firewall: properly handle protocol 0

The existing code failed to anticipate that '' == 0 in JS.

Signed-off-by: Jo-Philipp Wich <jo@mein.io>
(cherry picked from commit 2c036b36ce76c3c7430bf936e131f0d9d4ab83c4)

diff --git a/applications/luci-app-firewall/htdocs/luci-static/resources/tools/firewall.js b/applications/luci-app-firewall/htdocs/luci-static/resources/tools/firewall.js
index cfa6c836510e3df7762efa1ebe549854ad6c060e..640b28cf7421daffa62667a6dfc9088739c355d3 100644 (file)
--- a/applications/luci-app-firewall/htdocs/luci-static/resources/tools/firewall.js
+++ b/applications/luci-app-firewall/htdocs/luci-static/resources/tools/firewall.js
@@ -69,7 +69,7 @@ var protocols = [
 ];
 
 function lookupProto(x) {
-       if (x == null || x == '')
+       if (x == null || x === '')
                return null;
 
        var s = String(x).toLowerCase();