Gate code behind proper platform #ifdefs

Author: keveleigh

Assets/MixedRealityToolkit.Providers/WindowsMixedReality/WindowsMixedRealityDeviceManager.cs

@@ -5,8 +5,8 @@
 using Microsoft.MixedReality.Toolkit.Input;
 using Microsoft.MixedReality.Toolkit.Windows.Input;
 using Microsoft.MixedReality.Toolkit.Windows.Utilities;
-using UnityEngine;
 using System;
+using UnityEngine;
 
 #if UNITY_WSA
 using System.Collections.Generic;
@@ -98,7 +98,6 @@ public bool CheckCapability(MixedRealityCapability capability)
         #endregion IMixedRealityCapabilityCheck Implementation
 
 #if UNITY_WSA
-
         /// <summary>
         /// The initial size of interactionmanagerStates.
         /// </summary>
@@ -320,10 +319,12 @@ public override void Enable()
 
             if (InputSystemProfile == null) { return; }
 
+#if (UNITY_WSA && DOTNETWINRT_PRESENT) || WINDOWS_UWP
             if (WindowsMixedRealityUtilities.WmrUtilitiesProvider == null)
             {
                 WindowsMixedRealityUtilities.WmrUtilitiesProvider = new WindowsMixedRealityUtilitiesProvider();
             }
+#endif // (UNITY_WSA && DOTNETWINRT_PRESENT) || WINDOWS_UWP
 
             if (InputSystemProfile.GesturesProfile != null)
             {

Assets/MixedRealityToolkit.Providers/WindowsMixedReality/WindowsMixedRealityUtilitiesProvider.cs

@@ -13,7 +13,12 @@ namespace Microsoft.MixedReality.Toolkit.WindowsMixedReality
     public class WindowsMixedRealityUtilitiesProvider : IWindowsMixedRealityUtilitiesProvider
     {
         /// <inheritdoc />
-        IntPtr IWindowsMixedRealityUtilitiesProvider.ISpatialCoordinateSystemPtr => WorldManager.GetNativeISpatialCoordinateSystemPtr();
+        IntPtr IWindowsMixedRealityUtilitiesProvider.ISpatialCoordinateSystemPtr => 
+#if UNITY_WSA
+            WorldManager.GetNativeISpatialCoordinateSystemPtr();
+#else
+            IntPtr.Zero;
+#endif
 
         /// <inheritdoc />
         IntPtr IWindowsMixedRealityUtilitiesProvider.IHolographicFramePtr