bug#42615: [PATCH] guix: lint: Ignore unsupported source URL’s.

[Mathieu Othacehe]

Hello,

> in https://issues.guix.gnu.org/issue/42306 I noticed git:// URI’s in source
> urls (see package nfs4-acl-tools) cause `guix lint` to fail currently. 
> Attached
> is a patch that fixes the issue, but I’m not sure that’s the “correct” way to
> do it.

I considered adding a warning saying that URI validation failed, but
I think it can be misleading and let the user think that something is
wrong with the package definition.

Anyway looks fine, pushed!

Thanks,

Mathieu