[cups.bugs] [LOW] STR #1519: socket URI with a port needs '/' suffix

[kmuto.debian]

[STR New]

I noticed "socket://hostname:9100" style won't work when I'd like to use
another port, such as "socket://hostname:9101".
This is because httpSeparateURI() requires "/" after custom port number.

It's nice if you can fix to allow both "backend://hostname:port" and
"backend://hostname:port/", but just modifing socket example URI of
choose-uri.tmpl is maybe enough.

Link: http://www.cups.org/str.php?L1519
Version: 1.2-current