Disabled by default, this statement attempted to pass a std::istream to
function std::fclose() which is meaningless and should not be enabled at
any time--even for a MATLAB-related build.
This is useful if a set of parameters can all be defaulted in which
case launching the executable *should* be a simple as
./a.out
but the constructor requirement leads to using
./a.out a=b
or something similar.
