From 6ce9d03d8acc3c1e8aa784f98cf853edab30c022 Mon Sep 17 00:00:00 2001
From: kris <kris@e0a8ed71-7df4-0310-8962-fdc924857419>
Date: Fri, 16 Nov 2007 01:26:42 +0000
Subject: [PATCH] Return NULL in reason_sort() if tail is NULL as it's possible
 tail never gets redefined.  I think that's better than an assert(tail). 
 Found with Coverity, CID 24

---
 portreasons.cc | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/portreasons.cc b/portreasons.cc
index a841ad6c4..f4782ae6b 100644
--- a/portreasons.cc
+++ b/portreasons.cc
@@ -214,7 +214,9 @@ static state_reason_summary_t *reason_sort(state_reason_summary_t *list) {
           }
           p = q;
        }
-	   tail->next = NULL;
+      if (!tail)
+        return NULL;
+      tail->next = NULL;
       if (nmerges <= 1)  
         return list;
       insize *= 2;