cypt32:chain started crashing on Jun 17

[Francois Gouget]

The June 16 build crashed on some machines but since June 17 all builds 
crash on all Windows machines (and time out in Wine):

https://test.winehq.org/data/patterns.html#crypt32:chain

The best explanation is that some certificate expired on the 17th:
* The few June 16 cypt32:chain tests that were run after midnight 
  (i.e. on the 17th) crashed.
* And all cypt32:chain tests run since the 17th crash.

Does anyone know what to do?