Function compose

src/jrd/optimizer/Optimizer.cpp:267–271

	};

	inline void compose(MemoryPool& pool, BoolExprNode** node1, BoolExprNode* node2)
	{
		if (node2)
			*node1 = (*node1) ? FB_NEW_POOL(pool) BinaryBoolNode(pool, blr_and, *node1, node2) : node2;
	}

	void classMask(unsigned count, ValueExprNode** eq_class, ULONG* mask)
	{