[OE-core] [PATCH] cairo: fix builds with libpng 1.6

[Burton, Ross]

On 16 April 2013 11:58, Ross Burton <ross.burton at intel.com> wrote:
> libpng 1.6 emits more warnings than before, and is also stricter with function
> ordering.  Fix the function ordering when reading PNGs, and stop treating all
> warnings as errors.

Ignore this, Chris just merged some pieces upstream so I'll update this patch.

Ross