Warning: Use of undefined constant und

Hi Team,

We faced PHP warning issues such as "Warning: Use of undefined constant und - assumed 'und' (this will throw an Error in a future version of PHP) in eval()" from the module code.

The array passing to the eval needs to be altered from example[und][0][nid] to example['und'][0]['nid'], We have added the patch from our end but it would be better if you add the patch to overcome in the future.

Thanks,
Kumar.G