opam: Avoid unnecessary raise instructions
This simplifies the logic behind the parsing of the opam_read function to avoid
raising outside of the opam_read call.
Related to T3425
Test Plan
tox
Migrated from D6009 (view on Phabricator)
Staging instance, all changes can be removed at any time
This simplifies the logic behind the parsing of the opam_read function to avoid
raising outside of the opam_read call.
Related to T3425
tox
Migrated from D6009 (view on Phabricator)