r46179 (bug #27387) added the ErrorEvent.h file, with a method 'lineno' declared as: const unsigned lineno() const { return m_lineNumber; } The 'const unsigned' value was (probably) a copy&paste mistake, since it does not really make any sense. Patch to fix this attached.
Created attachment 33319 [details] linenoconst.patch Remove 'const' modifier.
Comment on attachment 33319 [details] linenoconst.patch r=me
Landed as r46260, closing.