In your source code you have the wrong fsf address for your GPL 2 license

https://fedoraproject.org/wiki/Common_Rpmlint_issues#incorrect-fsf-addr…

The correct address is

http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt

This can not be patched (see the fedora url I linked)

I am going to guess you can fix this with a sed statement and run it on your source code ;)