Bug report: crash on JPG compression

[M-Gonzalo]

It's a huge 25'200p x 33'300p image. On my system (Manjaro Linux, Intel Celeron, 4gb RAM) precomp crashes trying to compress it. I tried both brunsli and packJPG too.

[schnaader]

Didn't crash on a machine with Windows 10 and 16 GB RAM, but consumed about 4,5 GB RAM, so I'll test it on another machine with less RAM (both Linux and Windows).

"-v" says that brunsli compression failed and packJPG is used as a fallback, though I guess that brunsli would also run into memory problems if it'd process the image.