Fix. crash when using EventCounsumer.ievents iterator. (#2865)

Problem code is
``` Lua
for event in ievents{'SHUTDOWN','CUSTOM::event'} do
end
```

resources/install/scripts/resources/functions/event_consumer.lua

@@ -375,7 +375,7 @@ end
 
 function TimeEvents:fire(this, ...)
 	self._lock = true
-	local i, events = 0, self._events
+	local events = self._events
 	for i = 1, #events do
 		local event = events[i]
 		if event:rest() == 0 then
@@ -609,9 +609,9 @@ local ievents = function(events, block, timeout)
 		for _, event in ipairs(array) do
 			local name, class
 			if type(event) == 'table' then
-				base, sub = event[1], event[2]
+				name, class = event[1], event[2]
 			else
-				name, class = split_event(base)
+				name, class = split_event(event)
 			end
 			if not class then events:bind(name)
 			else events:bind(name, class) end