another struct problem

Here is a minimal failing program:

    function [zz] = foo( )
    
    h.z = zeros(30,1);
    z1 = zeros(30,1);
    
    zz = z1(1:2);
    %zz = h.z(1:2);
    
    return

The commented line causes a crash:

    ValueError('missing return in function Fget in file structs, Matlab: Crash with file: foo.m, on line: 7',)

but when commented out, it works just fine.