Remove undefined behaviour in Vector3 and QAngle

[ASpoonPlaysGames]

NorthstarLauncher/NorthstarDLL/core/math/vector.h

Lines 5 to 28 in 210dab2

	union Vector3
	{
	struct
	{
	float x;
	float y;
	float z;
	};
	float raw[3];
	void MakeValid()
	{
	for (auto& fl : raw)
	if (std::isnan(fl))
	fl = 0;
	}
	// todo: more operators maybe
	bool operator==(const Vector3& other)
	{
	return x == other.x && y == other.y && z == other.z;
	}
	};

This code seems to think that accessing x, y, z and raw interchangeably is defined behaviour. It is undefined behaviour to access a member of a union that was not the most recently set.

https://eel.is/c++draft/class.union#general-2
https://eel.is/c++draft/class.mem#general-23