Refactored to use strictly locals

frontend/ui/widget/verticalspan.lua

@@ -0,0 +1,14 @@
+local Widget = require("ui/widget/widget")
+
+--[[
+Dummy Widget that reserves vertical space
+--]]
+local VerticalSpan = Widget:new{
+	width = 0,
+}
+
+function VerticalSpan:getSize()
+	return {w = 0, h = self.width}
+end
+
+return VerticalSpan