[PR #8831/2ae41fa8 backport][stable-9] keycloak_user_federation: get the before mappers from before_comp to fix UnboundLocalError (#8850)

keycloak_user_federation: get the before mappers from `before_comp` to fix `UnboundLocalError` (#8831)

* fix: get the before mappers from `before_comp`

* add changelog fragment

* Adjust changelog fragment.

---------

Co-authored-by: Felix Fontein <[email protected]>
(cherry picked from commit 2ae41fa)

Co-authored-by: fgruenbauer <[email protected]>

Author: patchback[bot]

changelogs/fragments/8831-fix-error-when-mapper-id-is-provided.yml

@@ -0,0 +1,2 @@
+bugfixes:
+  - keycloak_user_federation - fix the ``UnboundLocalError`` that occurs when an ID is provided for a user federation mapper (https://github.com/ansible-collections/community.general/pull/8831).

plugins/modules/keycloak_user_federation.py

@@ -907,7 +907,7 @@ def main():
             if cid is None:
                 old_mapper = {}
             elif change.get('id') is not None:
-                old_mapper = next((before_mapper for before_mapper in before_mapper.get('mappers', []) if before_mapper["id"] == change['id']), None)
+                old_mapper = next((before_mapper for before_mapper in before_comp.get('mappers', []) if before_mapper["id"] == change['id']), None)
                 if old_mapper is None:
                     old_mapper = {}
             else: