%load magic does not recognize notebooks

[andrus]

%load ../lib/my.ipynb

---------------------------------------------------------------------------
|   java.lang.RuntimeException: java.lang.RuntimeException, Exception running line magic 'load': [snippet: [{
|    "cells": [
|     {
|      "cell_type": "markdown",
|      "id": "48d49d50-02e6-4969-9d78-7604ee0736af",
|      "metadata": {},
|      "source": [ ....

So looks like this code used to detect whether the file is a notebook or not, does the wrong thing. Instead of checking an extension on a String, it actually checks the last path component, always returning "false":

if (scriptPath.getFileName().endsWith(NOTEBOOK_EXTENSION)) {
   execNotebook(kernel, scriptPath);
}