Added return type of this Minc function (not to be confused with head/sfprint.c).
Added return type of this Minc function (not to be confused with
head/sfprint.c).

RTcmix/RTcmix,RTcmix/RTcmix,RTcmix/RTcmix,RTcmix/RTcmix,RTcmix/RTcmix,RTcmix/RTcmix