Fixes bug where the library scanner is not recognized. (#24496)

* fixes bug where scanner is not recognized

* find scanner is a proc

code/modules/library/lib_machines.dm

@@ -270,9 +270,7 @@ var/global/list/datum/cachedbook/cachedbooks // List of our cached book datums
 		if(5)
 			dat += "<H3>Upload a New Title</H3>"
 			if(!scanner)
-				for(var/obj/machinery/libraryscanner/S in range(9))
-					scanner = S
-					break
+				findscanner(9)
 			if(!scanner)
 				dat += "<FONT color=red>No scanner found within wireless network range.</FONT><BR>"
 			else if(!scanner.cache)
@@ -288,6 +286,8 @@ var/global/list/datum/cachedbook/cachedbooks // List of our cached book datums
 			dat += "<A href='?src=\ref[src];switchscreen=0'>(Return to main menu)</A><BR>"
 		if(6)
 			dat += "<h3>Post Title to Newscaster</h3>"
+			if(!scanner)
+				scanner = findscanner(9)
 			if(!scanner)
 				dat += "<FONT color=red>No scanner found within wireless network range.</FONT><BR>"
 			else if(!scanner.cache)
@@ -313,6 +313,11 @@ var/global/list/datum/cachedbook/cachedbooks // List of our cached book datums
 	popup.set_title_image(user.browse_rsc_icon(src.icon, src.icon_state))
 	popup.open()
 
+/obj/machinery/computer/libraryconsole/bookmanagement/proc/findscanner(viewrange)
+	for(var/obj/machinery/libraryscanner/S in range(viewrange))
+		return S
+	return null
+
 /obj/machinery/computer/libraryconsole/bookmanagement/proc/print_forbidden_lore(mob/user)
 	var/spook = pick("blood", "brass")
 	var/turf/T = get_turf(src)