[PATCH] firewall3: fix process termination in child processes

[Jonas Lochmann]

I am curious: What kind of subprocess is invoked that fails sometimes?

Another question: Why do you use firewall3 and not firewall4? If there
is no reason for staying at firewall3, upgrading could maybe solve this.

> I have submitted a pull request for firewall3 to fix a bug where child
> processes fail to terminate if an exec operation fails.