Error compiling epiphany-extensions 0.9.1

[Roop Nanuwa]

I get the following error that prevents me from installing
epiphany-extensions 0.9.1 which is part of the gnome2-powertools meta
port.

I'm running 5.2-CURRENT and updated my ports tree before and after
getting this error.

Tail end of the error is below with the full error log attached.

mozilla-helpers.cpp: In function `void mozilla_open_popup(EphyEmbed*, const
   char*, const char*)':
mozilla-helpers.cpp:168: error: no matching function for call to `
   nsDerivedSafe<nsIScriptGlobalObject>::GetContext(
   nsGetterAddRefs<nsIScriptContext>)'
/usr/X11R6/include/mozilla/dom/nsIScriptGlobalObject.h:69: error: candidates 
   are: virtual nsIScriptContext* nsIScriptGlobalObject::GetContext()
gmake[4]: *** [mozilla-helpers.lo] Error 1
gmake[4]: Leaving directory `/usr/ports/www/epiphany-extensions/work/epiphany
-extensions-0.9.1/extensions/popup-blocker/mozilla'
gmake[3]: *** [all-recursive] Error 1
gmake[3]: Leaving directory `/usr/ports/www/epiphany-extensions/work/epiphany
-extensions-0.9.1/extensions/popup-blocker'
gmake[2]: *** [all-recursive] Error 1
gmake[2]: Leaving directory `/usr/ports/www/epiphany-extensions/work/epiphany
-extensions-0.9.1/extensions'
gmake[1]: *** [all-recursive] Error 1
gmake[1]: Leaving directory `/usr/ports/www/epiphany-extensions/work/epiphany
-extensions-0.9.1'
gmake: *** [all] Error 2
*** Error code 2

Stop in /usr/ports/www/epiphany-extensions.