commit 249c981407b8c52edf2b0833a78cd3d3d8bd2823
Author: Shea Levy <shea@shealevy.com>
Date:   Sun Feb 10 13:27:10 2013 -0500

    curl_multi_cleanup: Don't try to cleanup the closure_handle if it is NULL.
    
    Without this, curl_multi_cleanup(curl_multi_init()) segfaults.
    
    Signed-off-by: Shea Levy <shea@shealevy.com>

diff --git a/lib/multi.c b/lib/multi.c
index fa0afb9..5b9d0bb 100644
--- a/lib/multi.c
+++ b/lib/multi.c
@@ -1773,11 +1773,13 @@ CURLMcode curl_multi_cleanup(CURLM *multi_handle)
     /* Close all the connections in the connection cache */
     close_all_connections(multi);
 
-    multi->closure_handle->dns.hostcache = multi->hostcache;
-    Curl_hostcache_clean(multi->closure_handle);
+    if (multi->closure_handle) {
+        multi->closure_handle->dns.hostcache = multi->hostcache;
+        Curl_hostcache_clean(multi->closure_handle);
 
-    Curl_close(multi->closure_handle);
-    multi->closure_handle = NULL;
+        Curl_close(multi->closure_handle);
+        multi->closure_handle = NULL;
+    }
 
     Curl_hash_destroy(multi->sockhash);
     multi->sockhash = NULL;