Fixes an incorrect method definition (#40719)

The to_return method def in bigiq's https offload module was incorrect.
This fixes it.

lib/ansible/modules/network/f5/bigiq_application_https_offload.py

@@ -394,9 +394,12 @@ class ModuleParameters(Parameters):
 class Changes(Parameters):
     def to_return(self):
         result = {}
-        for returnable in self.returnables:
-            result[returnable] = getattr(self, returnable)
-        result = self._filter_params(result)
+        try:
+            for returnable in self.returnables:
+                result[returnable] = getattr(self, returnable)
+            result = self._filter_params(result)
+        except Exception:
+            pass
         return result