Fixes #12442: Broken reporting for generic method file_ensure_key_value_option

[amousset]

https://www.rudder-project.org/redmine/issues/12442

[Normation-Quality-Assistant]

OK, merging this PR

[Normation-Quality-Assistant]

This PR breaks qa-test

-- stdout -- 
Already up-to-date.
Deleted branch 4.3_test (was 72bfe36).
Already up-to-date.
Removing qa.lock
[...]

OK
Switched to branch 'branches/rudder/4.3'
Switched to branch '4.3_test'
Switched to branch 'master'
Switched to a new branch 'master_test'
grep: error while loading shared libraries: libpcre.so.3: failed to map segment from shared object: Cannot allocate memory
./testall: 156: ./testall: Cannot fork
make: *** [test-common] Error 2

You should run ./qa-test in your repository to make sure it works.
You can also run rudder-dev merge https://github.com/Normation/ncf/pull/742 --test to test with upmerging.
After this, you can remove the qa: Can't merge ta
-- Your faithful QA