tests: Test override of chacha20 && poly1305 instead of ||.

Simon Josefssonrequested to merge
jas/libssh-mirror:jas/fix-logic-bug into master

Hi! While working on another contribution, I noticed that override testing of chacha20+poly1305 is a bit lax in that it accepts || instead of requiring && of the tests. What do you think?

Checklist

  • Commits have Signed-off-by: with name/author being identical to the commit author
  • Code modified for feature
  • Test suite updated with functionality tests
  • Test suite updated with negative tests
  • Documentation updated

Reviewer's checklist:

  • Any issues marked for closing are addressed
  • There is a test suite reasonably covering new functionality or modifications
  • Function naming, parameters, return values, types, etc., are consistent and according to CONTRIBUTING.md
  • This feature/change has adequate documentation added
  • No obvious mistakes in the code

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