add namespace for !il2cpp and replace var with type

Author: David Kline (ANALOG)

Assets/MixedRealityToolkit/Attributes/MixedRealityControllerAttribute.cs

@@ -6,6 +6,10 @@
 using System;
 using System.Linq;
 
+#if WINDOWS_UWP && !ENABLE_IL2CPP
+using Microsoft.MixedReality.Toolkit.Core.Extensions;
+#endif // WINDOWS_UWP && !ENABLE_IL2CPP
+
 namespace Microsoft.MixedReality.Toolkit.Core.Attributes
 {
     /// <summary>

Assets/MixedRealityToolkit/Definitions/Devices/MixedRealityControllerMappingProfile.cs

@@ -37,8 +37,7 @@ private static void CollectControllerTypes()
         {
             if (controllerMappingTypes == null)
             {
-                var tmp = new List<Type>();
-                // todo: not supported on uwp/.net
+                List<Type> tmp = new List<Type>();
                 foreach (Assembly assembly in AppDomain.CurrentDomain.GetAssemblies())
                 {
                     try