Bring back needed code

code/game/machinery/doors/firedoor.dm

@@ -2,7 +2,7 @@
 /var/const/CLOSED = 2
 
 #define FIREDOOR_MAX_PRESSURE_DIFF 25 // kPa
-#define FIREDOOR_MAX_TEMP 50 // <EFBFBD>C
+#define FIREDOOR_MAX_TEMP 50 // °C
 #define FIREDOOR_MIN_TEMP 0
 
 // Bitflags
@@ -164,6 +164,8 @@
 	var/needs_to_close = 0
 	if(density)
 		if(alarmed)
+			// Accountability!
+			users_to_open |= user.name
 			needs_to_close = 1
 		spawn()
 			open()