removeListener() may be called on an undefined object
IstvanD opened this issue · 1 comments
IstvanD commented
Calling removeListener() may lead to an exception because the me object can be null/undefined.
https://github.com/ckeditor/ckeditor4/blob/major/core/event.js#L167
This may lead to issues like LPS-131699.
See PTR-2398 for more info and explanation.
A null check should be applied.