vmware_vm_facts: Add error check for config.vm (#31629)

Add a simple check to see if vm.config exists before looking for
vm.config.hardware

lib/ansible/modules/cloud/vmware/vmware_vm_facts.py

@@ -72,6 +72,7 @@ def get_all_virtual_machines(content):
             if _ip_address is None:
                 _ip_address = ""
         _mac_address = []
+        if vm.config is not None:
             for dev in vm.config.hardware.device:
                 if isinstance(dev, vim.vm.device.VirtualEthernetCard):
                     _mac_address.append(dev.macAddress)