[generation] unavailable inline C function

[Sunbreak]

For example:

libusb.dart/libusb-1.0/libusb.h

Lines 161 to 178 in 7f7ed5f

	/**
	* \ingroup libusb_misc
	* Convert a 16-bit value from host-endian to little-endian format. On
	* little endian systems, this function does nothing. On big endian systems,
	* the bytes are swapped.
	* \param x the host-endian value to convert
	* \returns the value in little-endian byte order
	*/
	static inline uint16_t libusb_cpu_to_le16(const uint16_t x)
	{
	union {
	uint8_t b8[2];
	uint16_t b16;
	} _tmp;
	_tmp.b8[1] = (uint8_t) (x >> 8);
	_tmp.b8[0] = (uint8_t) (x & 0xff);
	return _tmp.b16;
	}

results

libusb.dart/lib/libusb_macos.dart

Lines 587 to 602 in 7f7ed5f

	/// \ingroup libusb_misc
	/// Convert a 16-bit value from host-endian to little-endian format. On
	/// little endian systems, this function does nothing. On big endian systems,
	/// the bytes are swapped.
	/// \param x the host-endian value to convert
	/// \returns the value in little-endian byte order
	int libusb_cpu_to_le16(
	int x,
	) {
	_libusb_cpu_to_le16 ??=
	_dylib.lookupFunction<_c_libusb_cpu_to_le16, _dart_libusb_cpu_to_le16>(
	'libusb_cpu_to_le16');
	return _libusb_cpu_to_le16(
	x,
	);
	}

which doen't exist in dynamic library

---

Calling it would throw ArgumentError

libusb.dart/test/libusb_test.dart

Lines 32 to 34 in b67b2f7

	test('libusb_cpu_to_le16', () {
	expect(() => libusb.libusb_cpu_to_le16(0), throwsArgumentError);
	});

Marked those inline functions @Deprecated('inline') as a workaround

[Sunbreak]

Solved since https://github.com/woodemi/libusb.dart/releases/tag/0.3.23-nullsafety.0

Remain opened until nullable version deprecated