### 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
Tracker *tracker = tracker_owner.get_or_null(p_tracker);
	ERR_FAIL_NULL(tracker);
	
	tracker_owner.free(p_tracker);
}
RID OpenXRAPI::action_set_create(const String p_name, const String p_localized_name, const int p_priority) {