From 91c001f93b0ad0aba0d3fdee12e6891a1851e2aa Mon Sep 17 00:00:00 2001
From: Gerardo Iglesias Galvan <iglesiasg@gmail.com>
Date: Tue, 31 May 2011 18:37:33 -0500
Subject: [PATCH] Fix potential crash in initialization cleanup code

---
 src/detect-engine-siggroup.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/detect-engine-siggroup.c b/src/detect-engine-siggroup.c
index 0ff6a77121..8850d1475f 100644
--- a/src/detect-engine-siggroup.c
+++ b/src/detect-engine-siggroup.c
@@ -888,6 +888,9 @@ static void SigGroupHeadFreeSigArraysHash2(DetectEngineCtx *de_ctx,
          htb = HashListTableGetListNext(htb))
     {
         sgh = (SigGroupHead *)HashListTableGetListData(htb);
+        if (sgh == NULL) {
+            continue;
+        }
 
         if (sgh->init->sig_array != NULL) {
             detect_siggroup_sigarray_free_cnt++;