am bd2ced11: am 51cce58c: Ensure the plugin\'s native code is never called with an invalid NPP pointer.

Merge commit 'bd2ced1184a498fe5e6d93e780707e99971a0216'

* commit 'bd2ced1184a498fe5e6d93e780707e99971a0216':
  Ensure the plugin's native code is never called with an invalid NPP pointer.