[MIRROR] Linter Introduction + Cleanup

code/modules/admin/verbs/diagnostics.dm

@@ -17,7 +17,7 @@
 	var/inactive_on_main_station = 0
 	for(var/zone/zone in air_master.zones)
 		var/turf/simulated/turf = locate() in zone.contents
-		if(turf && turf.z in using_map.station_levels)
+		if(turf?.z in using_map.station_levels)
 			if(zone.needs_update)
 				active_on_main_station++
 			else
@@ -79,7 +79,7 @@
 	var/output = "<b>Radio Report</b><hr>"
 	for (var/fq in radio_controller.frequencies)
 		output += "<b>Freq: [fq]</b><br>"
-		var/list/datum/radio_frequency/fqs = radio_controller.frequencies[fq]
+		var/datum/radio_frequency/fqs = radio_controller.frequencies[fq]
 		if (!fqs)
 			output += "&nbsp;&nbsp;<b>ERROR</b><br>"
 			continue