12-byte IVs patch

There is a problem in the code:

• https://github.com/xsf/xeps/pull/894

Can you add the patch to solve the problem?

• https://github.com/gkdr/libomemo/pull/27

Thanks in advance.

Linked to:

• https://github.com/gkdr/lurch/issues/142
• https://github.com/gkdr/libomemo/issues/24

PS: There is a temporary bug on GitHub, the patch is already in 2 OS:

• https://github.com/alpinelinux/aports/tree/master/community/libomemo
• https://salsa.debian.org/DebianOnMobile-team/libomemo/-/commits/debian/master/