Description of problem:

There is some stupid error message "need more than 1 value to unpack"

Version-Release number of selected component (if applicable):
Name        : firewalld
Arch        : noarch
Version     : 0.2.12
Release     : 6.fc18

How reproducible:
[root@megatron ~]# firewall-cmd --permanent --zone=public --add-port=9830
need more than 1 value to unpack

Actual results:
Useless, annoying error message

Expected results:
Verbose error message, saying me: "hey, you have forgot to specify protocol in add-port statement! Example: 9830/tcp"