From e29f62f0a7034a2a42fb43b913e6576e63a03fe5 Mon Sep 17 00:00:00 2001
From: Yang Tse <yangsita@gmail.com>
Date: Mon, 27 Oct 2008 05:29:17 +0000
Subject: [PATCH] add null-pointer check

---
 lib/hash.c    | 3 ++-
 lib/hostip6.c | 3 ++-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/lib/hash.c b/lib/hash.c
index f7d072482..7757d8b64 100644
--- a/lib/hash.c
+++ b/lib/hash.c
@@ -45,7 +45,8 @@ hash_element_dtor(void *user, void *element)
   if(e->key)
     free(e->key);
 
-  h->dtor(e->ptr);
+  if(e->ptr)
+    h->dtor(e->ptr);
 
   free(e);
 }
diff --git a/lib/hostip6.c b/lib/hostip6.c
index e1c901212..228352d26 100644
--- a/lib/hostip6.c
+++ b/lib/hostip6.c
@@ -85,7 +85,8 @@
  */
 void Curl_freeaddrinfo(Curl_addrinfo *p)
 {
-  freeaddrinfo(p);
+  if(p)
+    freeaddrinfo(p);
 }
 
 #ifdef CURLRES_ASYNCH