Fix reorder-ctor warning when building MiniScript-cpp

[MineRobber9000]

Discovered these warnings while building MSRLWeb. Basically, the issue is that initializers run in order of their definition in the class and not the order they're given on the constructor, so, for example, you might think this:

class Foo {
public:
    Foo() : baz(0), bar(baz) {}
    int bar;
    int baz;
};

Would initialize bar and baz to 0, but in reality, bar is initialized first with whatever uninitialized value is in baz, followed by baz being initialized to 0. In theory, this warning doesn't mean anything for MiniScript (both instances of this warning are for values being initialized to static values), but it doesn't cost much more than a few minutes of my time to fix this so that this warning doesn't appear when building a project with MiniScript.