Patches for libps

[Jeremie Koenig]

Hi, these patches fix a few issues with libps which I have come across
while rewriting procfs (in good shape, coming soon!)

[PATCH 1/4] libps (_proc_stat_free): Fix deadly typo
[PATCH 2/4] libps (_proc_stat_free): Fix memory leak

These two should probably be applied.


This one fixes an error which can never happen (with GNU Mach anyway).
It's also less conservative than it could be, since I've chosen to
revamp the code so as to avoid the same kind of errors in the future.


This one is trivial and would probably not hurt (though the benefit
would not be that big either.)

More about the new procfs soon.