use MGD_ERR_OBJECT_NO_STORAGE where appropriate

<Piotras> jval, wrt 1631, there must be macro written, for Ragna and trunk

<jval> Piotras: regarding 1631, ok, you want to enhance it further but i did think it corrently that those places should use that error code instead, right?

<Piotras> jval, yes, might be code has been written first and error codes has been added later

<jval> yes, that's what i thought too :)