Fix model 144538

[JCGoran]

Issue to track progress of model in #101.

The model https://github.com/ModelDBRepository/144538 is failing in the CI using NEURON 9 with the following error:

%neuron-executable%: syntax error
 in arm.hoc near line 163
       nqDP.append(1,xo.id,DP,xo.zloc,MTYP.o(xo.zloc).s,shminmlen,shmaxmlen)
                                          ^
        xopen("arm.hoc")
      execute1("{xopen("ar...")
    load_file("arm.hoc")
%neuron-executable%: hoc_Load_file arm.hoc
 in arm.hoc near line 33
 ^
        load_file("arm.hoc")
hoc_run1: caught exception: hoc_execerror: hoc_Load_file arm.hoc