Header concatenate(): Catch segfault on concatenating axis higher than image dim
Header concatenate(): Catch segfault on concatenating axis higher than image dim

MRtrix3/mrtrix3,MRtrix3/mrtrix3,MRtrix3/mrtrix3,MRtrix3/mrtrix3,MRtrix3/mrtrix3,MRtrix3/mrtrix3