freeall() does not free members_hash ?

[Bill Allombert <allomber@math.u-bordeaux.fr>]

Hello PARI-dev,

During the new parser experiment, I found that
freeall() probably miss a
free((void *)members_hash);

(By the way, gcc give a warning in subgroups.c line 290)

Cheers,
Bill.

PS:
I have updated the experimental parser:
<http://pari.math.u-bordeaux.fr/~bill/pari-2.2.8.bill-2.tar.gz>
It support break(), return() and %n.
it pass the test-suite if we exclude all the getheap calls since I have
removed the kludges.