Fix ore silo runtime (#48976)

Unicode change revealed another material nonsense, who'd expect that.

code/modules/mining/machine_silo.dm

@@ -232,8 +232,9 @@ GLOBAL_LIST_EMPTY(silo_access_logs)
 	var/list/msg = list("([timestamp]) <b>[machine_name]</b> in [area_name]<br>[action] [abs(amount)]x [noun]<br>")
 	var/sep = ""
 	for(var/key in materials)
+		var/datum/material/M = key
 		var/val = round(materials[key]) / MINERAL_MATERIAL_AMOUNT
 		msg += sep
 		sep = ", "
-		msg += "[amount < 0 ? "-" : "+"][val] [copytext(key, length(key[1]) + 1)]"
+		msg += "[amount < 0 ? "-" : "+"][val] [M.name]"
 	formatted = msg.Join()