typo + prevent some temporary Vector3 creation

src/Math/babylon.math.ts

@@ -2272,7 +2272,7 @@ module BABYLON {
          * @param result defines the Vector3 where to store the result
          */
         public static TransformCoordinatesToRef(vector: Vector3, transformation: Readonly<Matrix>, result: Vector3): void {
-            return Vector3.TransformCoordinatesFromFloatsToRef(vector.x, vector.y, vector.z, transformation, result);
+            Vector3.TransformCoordinatesFromFloatsToRef(vector.x, vector.y, vector.z, transformation, result);
         }
 
         /**

src/Mesh/babylon.abstractMesh.ts

@@ -1400,8 +1400,10 @@ module BABYLON {
             if (intersectInfo) {
                 // Get picked point
                 const world = this.getWorldMatrix();
-                const worldOrigin = Vector3.TransformCoordinates(ray.origin, world);
-                const direction = ray.direction.scaleToRef(intersectInfo.distance, Tmp.Vector3[0]);
+                const worldOrigin = Tmp.Vector3[0];
+                const direction = Tmp.Vector3[1];
+                Vector3.TransformCoordinatesToRef(ray.origin, world, worldOrigin);
+                ray.direction.scaleToRef(intersectInfo.distance, direction);
                 const worldDirection = Vector3.TransformNormal(direction, world);
                 const pickedPoint = worldDirection.addInPlace(worldOrigin);
 
@@ -1509,7 +1511,7 @@ module BABYLON {
             });
 
             // SubMeshes
-            if (this.getClassName() !== "InstancedMesh" && this.getClassName() !== "InstancedLinesMesh") {
+            if (this.getClassName() !== "InstancedMesh" || this.getClassName() !== "InstancedLinesMesh") {
                 this.releaseSubMeshes();
             }