fix IMRPhenomXPHM nightly pipeline failures
Some jobs during the nightly pipeline after the commit 4af4488d failed as pointed by @adam-mercer in issue #293 (closed), here we address the gcc 9 problem and the unity test fail for test_phenomX.py.
API Changes and Justification
Backwards Compatible Changes
- This change introduces no API changes
- This change adds new API calls
Backwards Incompatible Changes
- This change modifies an existing API
- This change removes an existing API
If any of the Backwards Incompatible check boxes are ticked please provide a justification why this change is necessary and why it needs to be done in a backwards incompatible way.
We can not test the nightly pipeline so we asked @adam-mercer to trigger this before merging.