package_facts: apk fix when cache is empty (#83132)

changelogs/fragments/apk_package_facts.yml

@@ -0,0 +1,3 @@
+---
+bugfixes:
+  - package_facts - apk fix when cache is empty (https://github.com/ansible/ansible/issues/83126).

lib/ansible/modules/package_facts.py

@@ -460,7 +460,7 @@ class APK(CLIMgr):
 
     def list_installed(self):
         rc, out, err = module.run_command([self._cli, 'info', '-v'])
-        if rc != 0 or err:
+        if rc != 0:
             raise Exception("Unable to list packages rc=%s : %s" % (rc, err))
         return out.splitlines()