test-ptc-track-6Dtl-acd emit a fortran runtime error on recent fedora

[rdemaria]

Here is a docker file to reproduce the issue:

FROM fedora:latest
RUN yum install -y git gfortran make g++ glibc-static libgfortran-static libstdc++-static
RUN yum install -y gnuplot
RUN git clone https://github.com/MethodicalAcceleratorDesign/MAD-X.git
WORKDIR MAD-X
RUN make madx-linux64-gnu X11=no
RUN make numdiff-linux64-gnu
RUN make tests

gfortran version from 12.2.1 (fedora 36) to 13.2.1 (fedora 38)