### Godot version

4.0 Beta 11

### System information

Windows 10 version 22H2, GeForce Game Ready Driver Version 528.02, GTX 1070

### Issue description

Since Beta 11 this error is given whenever a project is run in the forward+ renderer with OpenXR enabled. This error is not present with Beta 10 and previous versions.
![image](https://user-images.githubusercontent.com/38119387/212044209-1179b908-f010-47a1-ae53-bc2faadc30de.png)

I've tested with projects created in previous versions as well as the current version (Beta 11)

### Steps to reproduce

Create project, enable OpenXR in project settings, and run.

### Minimal reproduction project

N/A
ERR_FAIL_COND_V(session == XR_NULL_HANDLE, false);
	if (supported_reference_spaces != nullptr) {
		
		memfree(supported_reference_spaces);
		supported_reference_spaces = nullptr;
	}
	XrResult result = xrEnumerateReferenceSpaces(session, 0, &num_reference_spaces, nullptr);
	if (XR_FAILED(result)) {
		print_line("OpenXR: Failed to get reference space count [", get_error_string(result), "]");
		return false;
	}
	supported_reference_spaces = (XrReferenceSpaceType *)memalloc(sizeof(XrReferenceSpaceType) * num_reference_spaces);
	ERR_FAIL_NULL_V(supported_reference_spaces, false);
	result = xrEnumerateReferenceSpaces(session, num_reference_spaces, &num_reference_spaces, supported_reference_spaces);
	ERR_FAIL_COND_V_MSG(XR_FAILED(result), false, "OpenXR: Failed to enumerate reference spaces");
	for (uint32_t i = 0; i < num_reference_spaces; i++) {
		print_verbose(String("OpenXR: Found supported reference space ") + OpenXRUtil::get_reference_space_name(supported_reference_spaces[i]));
	}
	return true;
}
bool OpenXRAPI::is_reference_space_supported(XrReferenceSpaceType p_reference_space) {