fix 'rival' command

lb_store.lua

@@ -18,6 +18,27 @@ local ColdStore = {}
 local LiveStore = {}
 
 
+-- GLOBAL
+-- Returns a list of all maps with records
+local function MapList()
+	local maps = {}
+	for map in pairs(ColdStore) do
+		maps[map] = true
+	end
+	for map in pairs(LiveStore) do
+		maps[map] = true
+	end
+
+	local maplist = {}
+	for map in pairs(maps) do
+		table.insert(maplist, map)
+	end
+	table.sort(maplist)
+
+	return maplist
+end
+rawset(_G, "lb_map_list", MapList)
+
 -- GLOBAL
 -- Function for adding records from lua
 local function AddColdStore(record)