* boot2: Simplify g_additional_launch_programs
It appears that Stratosphère is targeting C++17. In C++17,
std::make_tuple is not required for initialisating a tuple anymore.
Same thing, but less typing
* Replace std::make_tuple with {}
More readable and less noise. Also fixes two missing return statements.
f(x, x++) is unspecified behaviour in C++. An implementation could
evaluate arguments from left to right or from right to left.
`T(r.Buffers[a_index], r.BufferSizes[a_index++])` might
access the wrong buffer if `a_index++` is evaluated before the first
argument.
Fixes -Wsequence-point warnings
