[Buildroot] [PATCH] Revert "package/openvpn: bump version to 2.3.10"

[Bernd Kuhls]

Am Sun, 31 Jan 2016 10:26:30 -0300 schrieb Gustavo Zacarias:

> openvpn 2.3.10 doesn't work with polarssl 1.2.x, hence this bump breaks
> builds for the polarssl backend.

Reviewed-by: Bernd Kuhls <bernd.kuhls at t-online.de>