util.events: Remove an event's table when it has no more handlers.

diff --git a/util/events.lua b/util/events.lua
index 8e05072d55d958452638d9862dfcb1bc1853274b..412acccd762cb755a9c0627f2689ea82b5989465 100644 (file)
--- a/util/events.lua
+++ b/util/events.lua
@@ -45,6 +45,9 @@ function new()
                if map then
                        map[handler] = nil;
                        handlers[event] = nil;
+                       if next(map) == nil then
+                               event_map[event] = nil;
+                       end
                end
        end;
        local function add_handlers(handlers)