Clean up a build warning in StripMeshLineRenderer and MixedRealityControllerInfo

Author: keveleigh

Assets/MixedRealityToolkit-SDK/Features/UX/Scripts/Controllers/MixedRealityControllerInfo.cs

@@ -45,7 +45,7 @@ public class MixedRealityControllerInfo
         private GameObject touchpadTouchY;
         private Transform touchpadTouchYMin;
         private Transform touchpadTouchYMax;
-        private GameObject touchpadTouchVisualizer;
+        private GameObject touchpadTouchVisualizer = null;
         private GameObject pointingPose;
 
         // These values are used to determine if a button's state has changed.

Assets/MixedRealityToolkit/_Core/Utilities/Lines/Renderers/StripMeshLineRenderer.cs

@@ -15,7 +15,7 @@ public class StripMeshLineRenderer : BaseMixedRealityLineRenderer
         [Header("Strip Mesh Settings")]
 
         [SerializeField]
-        private Material lineMaterial;
+        private Material lineMaterial = null;
 
         [SerializeField]
         private float uvOffset = 0f;