[OE-core] [PATCH 3/8] nettle: update to 3.4.1

[Richard Purdie]

On Wed, 2019-01-02 at 22:35 -0800, Khem Raj wrote:
> native version fails on ubuntu 14.04, seems like we need to pass
> -std=c99 explicitly via cflags see
> 
> http://errors.yoctoproject.org/Errors/Details/214590/

and 
https://autobuilder.yoctoproject.org/typhoon/#/builders/56/builds/86

Cheers,

Richard