Another snapmirror uninitialized value error (similar to closed issues but not quite)

[kfiresmith]

Issue Type

Bug report

Issue Detail
snapmirror_health check returns a false OK value after emitting a warning for each of the 10 relationships checked:

Use of uninitialized value in concatenation (.) or string at /usr/lib/nagios/plugins/check_netapp_ontap.pl line 1139.
Use of uninitialized value in concatenation (.) or string at /usr/lib/nagios/plugins/check_netapp_ontap.pl line 1139.
Use of uninitialized value in concatenation (.) or string at /usr/lib/nagios/plugins/check_netapp_ontap.pl line 1139.
Use of uninitialized value in concatenation (.) or string at /usr/lib/nagios/plugins/check_netapp_ontap.pl line 1139.
Use of uninitialized value in concatenation (.) or string at /usr/lib/nagios/plugins/check_netapp_ontap.pl line 1139.
Use of uninitialized value in concatenation (.) or string at /usr/lib/nagios/plugins/check_netapp_ontap.pl line 1139.
Use of uninitialized value in concatenation (.) or string at /usr/lib/nagios/plugins/check_netapp_ontap.pl line 1139.
Use of uninitialized value in concatenation (.) or string at /usr/lib/nagios/plugins/check_netapp_ontap.pl line 1139.
Use of uninitialized value in concatenation (.) or string at /usr/lib/nagios/plugins/check_netapp_ontap.pl line 1139.
Use of uninitialized value in concatenation (.) or string at /usr/lib/nagios/plugins/check_netapp_ontap.pl line 1139.
OK - No problem found (10 checked)

I absolutely DO happen to have unhealthy relationships at the moment so the false negative is a bit worrisome.

For example from the trace:

                                                                                            'name' => 'last-transfer-error',
                                                                                            'children' => [],
                                                                                            'content' => 'Transfer for volume "vsphere_redact_01" failed. Reason: Transfer failed. (Volume access error (No space left on device)).
Execute "snapmirror show -destination-vserver vsphere-redact-dr -fields last-transfer-error,unhealthy-reason -expand" to check if the constituent volumes have encountered errors.',
                                                                                            'attrkeys' => [],
                                                                                            'attrvals' => []
                                                                                          }, 'NaElement' ),

• check_netapp_ontap version: Latest

• NetApp Ontap version: 9.13.1

• Monitoring solution: Nagios Core 4x

Expected Behavior
Check should result in critical due to unhealthy snapmirror relationships

Actual Behavior
Perl warnings + false report of OK

How to reproduce Behavior
Monitor an unhealthy snapmirror relationship