Bug#900282: webkitgtk FTBFS with new ICU

[peter green]

package: webkitgtk
version: 2.4.11-3
severity: serious

Webkitgtk seems to be failing to build, failures have been seen with binnmus in Debian and Raspbian and also on the reproducible builds service. I had a look at the insanely large build log from reproducible builds and found the following error, there are likely many others.

../Source/JavaScriptCore/API/JSStringRef.cpp:86:30: error: invalid conversion from 'const UChar* {aka const char16_t*}' to 'const JSChar* {aka const short unsigned int*}' [-fpermissive]
      return string->characters();

It seems ubuntu already have a fix https://launchpad.net/ubuntu/+source/webkitgtk/2.4.11-3ubuntu3 I am trying to build that fix in raspbian now.