Fixes #40135

Signed-off-by: David Goulet <dgoulet@torproject.org>

These are:
  --disable-module-relay
  --disable-module-dirauth
  --enable-all-bugs-are-fatal
  --enable-nss

We already fixed these in #40099 and #40125.

This patch fixes #40126.  Bugfix on 0.2.8.1-alpha.

The rend_cache/entry_free was missing the rend cache allocation increment
before freeing the object.

Without it, it had an underflow bug:

  Sep 17 08:40:13.845 [warn] rend_cache_decrement_allocation(): Bug: Underflow
  in rend_cache_decrement_allocation (on Tor 0.4.5.0-alpha-dev
  7eef9ced)

Fixes #40125

Signed-off-by: David Goulet <dgoulet@torproject.org>

Without this fix, running this test on its own would fail.

Fixes bug 40099. Bugfix on ade50058 in 0.2.8.1-alpha.