* fixes CVE-2018-14404
* drop one hunk from libxml2-android.patch that was added in commit
  6a17d2f2; presumably nan() exists now
  given that other code is calling it.

Change-Id: I696cc4e1da55536ea1c89a6e0446ce5bc8398ba4
Reviewed-on: https://gerrit.libreoffice.org/66308
Tested-by: Jenkins
Reviewed-by: Michael Stahl <Michael.Stahl@cib.de>