Quick dirty bugfix

Colleagues, I'm publishing the version 0.0.31 of the FEDAnet sources, which fixes a file descriptor leak in the fedaserv daemon. Long things short, in the previous version, if it works long enough, it runs out of available file descriptors; as a result, it starts to refuse to recognize any remote peers, claiming it doesn't know their nodes (which is wrong; the real cause is that it can't read the…