solve_matlab.sh: fix syntax error
solve_matlab.sh: fix syntax error

Thanks to Nicholas Breen <nbreen@debian.org>

MrTheodor/csg,MrTheodor/csg,votca/csg,votca/csg,MrTheodor/csg,votca/csg,MrTheodor/csg,votca/csg,MrTheodor/csg