Previous MySQL fix only half correct - Corrected MySQL syntax to = NULL

[Alan DeKok]

Chris Moules wrote:
> I have created git patches for these two things.
> 
> Looks like there was only one error in the
> 243983349ba6d831da15677c46ff1f07fe977d68 commit. On initial examination
> I though there was a few more.

  Applied, thanks.

  Alan DeKok.