ObjFW  Diff

		if (count % 2 != 0)
			@throw [OFInvalidArgumentException exception];

		count /= 2;

		objects = OFAllocMemory(count, sizeof(id));
		keys = OFAllocMemory(count, sizeof(id));

		keys[i] = firstKey;
		objects[i] = va_arg(arguments, id);

		if (objects[i] == nil)
			@throw [OFInvalidArgumentException exception];

		i++;

		while ((key = va_arg(arguments, id)) != nil &&
		    (object = va_arg(arguments, id)) != nil) {
			OFEnsure(i < count);

			objects[i] = object;
			keys[i] = key;