[tor-dev] Abort in test_bridges.c

Running 'test.exe bridges/clear_bridge_list' causes this assertion:

bridges/clear_bridge_list: May 23 17:12:53.714 [err] tor_assertion_failed_(): Bug: container.h:70: smartlist_get: Assertion sl->num_used > idx failed;

AFAICS, since 'sweep_bridge_list()' caused all entries in 'bridgelist' to get deleted, an index of zero is illegal. Don't ask me why.

And since 'smartlist_get(bridgelist,0)' should be compiled with '-DDEBUG_SMARTLIST' in all tests/*.c sources. No?

I'm on Win-10, tor.exe + libs was built with MSVC 2017.