Bug#1132818: epiphany-browser FTBFS on s390x

[Jeremy Bícha]

Control: reassign -1 src:webkit2gtk 2.52.1-1
Control: affects -1 src:epiphany-browser
Control: forwarded -1 https://bugs.webkit.org/show_bug.cgi?id=312973

Nathan discovered that this actually appears to be a regression in
webkitgtk, since it affected Ubuntu's epiphany-browser which was not
updated to a newer version but webkitgtk was.

https://launchpad.net/bugs/2149886

Thank you,
Jeremy Bícha