gmx trjconv gets invalid pointer if tpr is not provided
gmx trjconv -f traj_comp.xtc
results in an segmentation fault, presumably because it's being assumed that a tpr file has been provided while it is not necessarily. Adding "-s topol.tpr" avoids the error. As can be see in the valgrind output (attached) the error occurs in "done_top(t_topology*) (topology.cpp:176)"