fix: added another check for power

pkg/crawler/main.go

@@ -294,14 +294,15 @@ func walkSystems(rf_systems []*redfish.ComputerSystem, rf_chassis *redfish.Chass
 			if err != nil {
 				log.Warn().Err(err).Str("id", rf_computersystem.ID).
 					Str("system", rf_computersystem.Name).Msg("failed to get power-related details from chassis")
-			}
-
+			} else {
 				// extract the power control odata.id resource
-			powercontrolIDs := []string{}
+				if power != nil {
 					for _, rf_powercontrol := range power.PowerControl {
 						powercontrolIDs = append(powercontrolIDs, rf_powercontrol.ODataID)
 					}
 				}
+			}
+		}
 
 		// convert supported reset types to []string
 		actions := []string{}