Do not segfault on hard stop

Podman machine on MAC can segfault on hard stop.

Fixes: 23654

Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>

pkg/machine/apple/vfkit/helper.go

@@ -83,7 +83,9 @@ func (vf *Helper) stateChange(newState rest.StateChange) error {
 	}
 	payload := bytes.NewReader(b)
 	serverResponse, err := vf.post(vf.Endpoint+state, payload)
-	_ = serverResponse.Body.Close()
+	if err == nil {
+		_ = serverResponse.Body.Close()
+	}
 	return err
 }