Fix sample CTP script

--- ./samples/operator.ctp
+++ ./samples/operator.ctp
@@ -35,8 +35,8 @@ BEGIN {
 	STDERR = "/dev/stderr";
 
 	argi = 1;
-	if (argi >= ARGV)
-		config = "/etc/proxy-user.conf"
+	if (argi >= ARGC)
+		config = "/etc/ftpproxy/proxy-user.conf"
 	else {
 		config = ARGV[argi];
 		ARGV[argi++] = "";