From 0aedb9ba194cb0e91600e969782674dc65bc0a4a Mon Sep 17 00:00:00 2001
From: Stephan Leemburg <stephan@it-functions.nl>
Date: Wed, 7 Sep 2016 21:45:04 +0200
Subject: [PATCH] avoid null pointer dereference

---
 src/reverse-proxy.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/reverse-proxy.c b/src/reverse-proxy.c
index 9ca55f6..b2e2db1 100644
--- a/src/reverse-proxy.c
+++ b/src/reverse-proxy.c
@@ -166,7 +166,8 @@ char *reverse_rewrite_url (struct conn_s *connptr, hashmap_t hashofheaders,
                 return NULL;
         }
 
-        log_message (LOG_CONN, "Rewriting URL: %s -> %s", url, rewrite_url);
+        log_message (LOG_CONN, "Rewriting URL: %s -> %s", url, 
+			rewrite_url ? rewrite_url : "No mapping found");
 
         /* Store reverse path so that the magical tracking cookie can be set */
         if (config.reversemagic && reverse)