sharedconfig: actually return from load()

because who needs return values for a function dedicated specifically to
returning a value, amirite?

sharedconfig.lua

@@ -18,7 +18,7 @@ local function add_default_value(key, value)
 	sharedstate.init(key, value)
 
 	if stored_value ~= nil then
-		sharedstate.set(key, stored_value)
+		sharedstate.queue(key, stored_value)
 	end
 end
 
@@ -30,6 +30,7 @@ function sharedconfig.load_defaults(defaults)
 	for k, v in pairs(defaults) do
 		add_default_value(k, v)
 	end
+	sharedstate.commit()
 end
 
 local function build_table()
@@ -50,6 +51,8 @@ function sharedconfig.load(key)
 	end
 	-- defaults haven't been initialized yet
 	if defaults_table == nil then return nil end
+
+	return sharedstate.get(key)
 end
 
 --- Save config