Bug#895000: atril always shows a stacktrace/crash from webkit displaying pdf files

[Jeremy Bicha]

Control: forwarded -1 https://bugs.webkit.org/show_bug.cgi?id=183348
Control: severity -1 important

Here's the upstream webkit2gtk bug report for the issue affecting
xreader (a fork of atril not in Debian) and atril.

Thanks,
Jeremy Bicha