build failure on i686: error: invalid conversion and no matching function

[Stephan Bergmann]

On 27/11/2019 14:20, Luke Benes wrote:
> https://cgit.freedesktop.org/libreoffice/core/commit/?id=278a365c68e0
>      Related: tdf#126043 use fastest png compression ratio
> 
> Does actually hurt:) It's causing the following error on x86 builds:

<https://gerrit.libreoffice.org/83912/> "Blind fix for 32-bit builds"