[PATCH, fortran] Convert returned types to correct type.

[FX Coudert]

> 2007-08-02  Steven G. Kargl  <kargl@gcc.gnu.org>
>
> 	PR fortran/32968
> 	* trans-intrinsic.c(gfc_conv_intrinsic_si_kind,
> 	gfc_conv_intrinsic_sr_kind): Convert to the correct type.

OK