### 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_NULL_V(supported_reference_spaces, false);
	for (uint32_t i = 0; i < num_reference_spaces; i++) {
		if (supported_reference_spaces[i] == p_reference_space) {
			return true;
		}
	}
	return false;
}
bool OpenXRAPI::setup_spaces() {
	XrResult result;
	XrPosef identityPose = {
		{ 0.0, 0.0, 0.0, 1.0 },
		{ 0.0, 0.0, 0.0 }
	};
	ERR_FAIL_COND_V(session == XR_NULL_HANDLE, false);
	
	{
		if (!is_reference_space_supported(reference_space)) {
			print_line("OpenXR: reference space ", OpenXRUtil::get_reference_space_name(reference_space), " is not supported.");
			return false;
		}
		XrReferenceSpaceCreateInfo play_space_create_info = {
			XR_TYPE_REFERENCE_SPACE_CREATE_INFO, 
			nullptr,