Appveyor: OpenSSL version mismatch in unit tests, 2019 edition
```
crypto/openssl_version: [forking]
FAIL ../src/test/test_crypto.c:237: OpenSSL library version 1.1.1d did not begin with header version 1.1.1c.
[openssl_version FAILED]
```
https://ci.appveyor.com/project/torproject/tor/builds/28757237/job/ul9m0fnglaqtw3oy?fullLog=true#L3511
issue