Hennadii Stepanov 6f4109b448 qa: Reduce -maxconnections in the functional test framework ...

Since bitcoin/bitcoin#35730 the HTTP server reserves file descriptors
for its listen sockets and for `-rpcmaxconnections` connected clients
(16 by default), so `min_required_fds` in init.cpp grew.

On select()-based platforms `available_fds` is capped at FD_SETSIZE,
which is 256 on NetBSD. The previous value of 94 no longer fits and
every node in the test suite started up with a warning, which the
framework treats as unexpected stderr and fails on.

Recompute the value with the new accounting (256 - 179 = 77) and
update the comment to match the current variable names in init.cpp.

2026-08-25 16:54:51 +01:00

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