I can't reproduce the crash, but the image in the bugdoc is a large one
(23100 x 1364 pixels) and it was black for me. It's rendered correctly
now.

Change-Id: I72c395af12ef88cf1352602492b84e1dcd04ed14
Reviewed-on: https://gerrit.libreoffice.org/53555Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>
Tested-by: Jenkins <ci@libreoffice.org>