Merge pull request #21342 from SUSE/wip-argparse-fix-validate_command…

…-error

pybind/ceph_argparse: Fix UnboundLocalError if command doesn't validate

Reviewed-by: Kefu Chai <kchai@redhat.com>

src/pybind/ceph_argparse.py

@@ -1087,7 +1087,7 @@ def validate_command(sigdict, args, verbose=False):
 
         if found:
             if not valid_dict:
-                print("Invalid command:", e, file=sys.stderr)
+                print("Invalid command:", ex, file=sys.stderr)
                 print(concise_sig(sig), ': ', cmd['help'], file=sys.stderr)
         else:
             bestcmds = bestcmds[:10]