Add patch to supported mesh types

Author: riccardobl

jme3-core/src/main/java/com/jme3/util/mikktspace/MikktspaceTangentGenerator.java

@@ -140,6 +140,7 @@ private static boolean generateTangents(Mesh mesh) {
             case Triangles:
             case TriangleFan:
             case TriangleStrip:
+            case Patch:
                 hasTriangles = true;
                 break;