luci-app-statistics: cleanup ping definitions

Signed-off-by: Florian Eckert <fe@dev.tdt.de>

applications/luci-app-statistics/luasrc/statistics/rrdtool/definitions/ping.lua

@@ -9,25 +9,44 @@ end
 
 function rrdargs( graph, plugin, plugin_instance, dtype )
 
-	return {
-		-- Ping roundtrip time
-		{ title = "%H: ICMP Round Trip Time",
+	local ping = {
+		title = "%H: ICMP Round Trip Time",
 		vlabel = "ms",
 		number_format = "%5.1lf ms",
 		data = {
-			sources = { ping = { "value" } },
-			options = { ping__value = {
-				noarea = true, overlay = true, title = "%di" } }
-		} },
+			sources = {
+				ping = {
+					"value"
+				}
+			},
+			options = {
+				ping__value = {
+					noarea = true,
+					overlay = true,
+					title = "%di"
+				}
+			}
+		}
+	}
 
-		-- Ping droprate
-		{ title = "%H: ICMP Drop Rate",
+	local droprate = {
+		title = "%H: ICMP Drop Rate",
 		vlabel = "%",
 		number_format = "%5.2lf %%",
 		data = {
-			types   = { "ping_droprate" },
-			options = { ping_droprate = {
-				noarea = true, overlay = true, title = "%di", transform_rpn = "100,*" } }
-		} }
+			types   = {
+				"ping_droprate"
+			},
+			options = {
+				ping_droprate = {
+					noarea = true,
+					overlay = true,
+					title = "%di",
+					transform_rpn = "100,*"
 				}
+			}
+		}
+	}
+
+	return { ping, droprate }
 end