Replay errors show line number of action

I would have done this FOREVER ago but every time I looked
in ticpp for a way to get element file positions I somehow
missed Row() and Column()

src/game/boe.main.cpp

@@ -984,7 +984,7 @@ static void replay_action(Element& action) {
 		throw std::string { "Replay system internal error! advance_time() was supposed to be called by the last action, but wasn't: " } + _last_action_type;
 	}else{
 		std::ostringstream sstr;
-		sstr << "Couldn't replay action: " << action;
+		sstr << "Couldn't replay action: " << action << " on line " << action.Row();
 		replaying = false;
 		throw sstr.str();
 	}