Merge pull request #9528 from Ty-Omaha/royal-bank-of-vending-machines

Fixes vending machine bank account security purchases

code/game/machinery/vending.dm

@@ -386,9 +386,8 @@
 	// empty at high security levels
 	if(customer_account.security_level != 0) //If card requires pin authentication (ie seclevel 1 or 2)
 		var/attempt_pin = input("Enter pin code", "Vendor transaction") as num
-		customer_account = attempt_account_access(customer_account, attempt_pin, 2)
-
-		if(!customer_account)
+	
+		if(!attempt_account_access(customer_account.account_number, attempt_pin, 2))
 			src.status_message = "Unable to access account: incorrect credentials."
 			src.status_error = 1
 			return 0