firewalld: don't reference undefined variable in error case (#31949)

* firewalld: don't reference undefined variable in error case

Signed-off-by: Adam Miller <maxamillion@fedoraproject.org>

* firewalld: don't set exception as var and not use it

Signed-off-by: Adam Miller <maxamillion@fedoraproject.org>

lib/ansible/modules/system/firewalld.py

@@ -169,7 +169,7 @@ try:
         fw.start()
         fw_offline = True
 
-except ImportError as e:
+except ImportError:
     import_failure = True
 
 
@@ -751,8 +751,7 @@ def main():
 
     if import_failure:
         module.fail_json(
-            msg='firewalld and its python 2 module are required for this module, version 2.0.11 or newer required (3.0.9 or newer for offline operations) \n %s'
-            % e
+            msg='firewalld and its python 2 module are required for this module, version 2.0.11 or newer required (3.0.9 or newer for offline operations)'
         )
 
     if fw_offline: