From c03a50b44be9c55347508335af42b7671e9e0352 Mon Sep 17 00:00:00 2001
From: Steven Hiscocks <steven@hiscocks.me.uk>
Date: Wed, 4 Dec 2013 23:13:27 +0000
Subject: [PATCH] BF: Allow handle case when SKIPLINES lines is not matched

Example is when one or more SKIPLINES is optional in a regex
---
 fail2ban/server/failregex.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/fail2ban/server/failregex.py b/fail2ban/server/failregex.py
index f7279931..d5732c80 100644
--- a/fail2ban/server/failregex.py
+++ b/fail2ban/server/failregex.py
@@ -133,7 +133,8 @@ class Regex:
 		n = 0
 		while True:
 			try:
-				skippedLines += self._matchCache.group("skiplines%i" % n)
+				if self._matchCache.group("skiplines%i" % n) is not None:
+					skippedLines += self._matchCache.group("skiplines%i" % n)
 				n += 1
 			except IndexError:
 				break