[cairo] [PATCH] image: prevent invalid ptr access for > 4GB images

[Petr Kobalíček]

Since `cairo_format_stride_for_width()` has no knowledge about the width it
cannot return -1 in case that stride * height would overflow. I think this
must be checked.

On Thu, Mar 9, 2017 at 12:01 PM, Adrian Johnson <ajohnson at redneon.com>
wrote:

> I wrote this patch [1] for bug 98165 last year. I found it is also
> needed to fix a poppler bug [2]. Any objections to pushing it?
>
> [1] https://bugs.freedesktop.org/show_bug.cgi?id=98165#c6
> [2] https://bugs.freedesktop.org/show_bug.cgi?id=100056
>
>
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