what is this

code/modules/library/lib_machines.dm

@@ -343,8 +343,11 @@ GLOBAL_LIST(cachedbooks) // List of our cached book datums
 		return ..()
 
 /obj/machinery/computer/libraryconsole/bookmanagement/emag_act(mob/user)
-	if(density && !(obj_flags & EMAGGED))
-		obj_flags |= EMAGGED
+	. = ..()
+	if(!density || obj_flags & EMAGGED)
+		return
+	obj_flags |= EMAGGED
+	return TRUE
 
 /obj/machinery/computer/libraryconsole/bookmanagement/Topic(href, href_list)
 	if(..())