Fixing Nullptr dereference

Source/CAVEOverlay/Private/CAVEOverlayController.cpp

@@ -312,7 +312,7 @@ void ACAVEOverlayController::Tick(float DeltaTime)
 		}
 	}
 
-	if (!Head) return; //Display Cluster not initialized
+	if (!Head || !Cave_Origin) return; //Display Cluster not initialized
 
 	//Tape Logic
 	FVector Shutter_Position = Cave_Origin->GetComponentLocation() - Head->GetComponentLocation();