url: make Curl_close() NULLify the pointer too

This is the common pattern used in the code and by a unified approach we
avoid mistakes.

Closes #4534

1 files changed, 3 insertions, 5 deletions

diff --git a/lib/conncache.c b/lib/conncache.c
index 2f4dd4bc3..57d6061fd 100644
--- a/lib/conncache.c
+++ b/lib/conncache.c
@@ -143,10 +143,8 @@ int Curl_conncache_init(struct conncache *connc, int size)
 
   rc = Curl_hash_init(&connc->hash, size, Curl_hash_str,
                       Curl_str_key_compare, free_bundle_hash_entry);
-  if(rc) {
-    Curl_close(connc->closure_handle);
-    connc->closure_handle = NULL;
-  }
+  if(rc)
+    Curl_close(&connc->closure_handle);
   else
     connc->closure_handle->state.conn_cache = connc;
 
@@ -595,7 +593,7 @@ void Curl_conncache_close_all_connections(struct conncache *connc)
 
     Curl_hostcache_clean(connc->closure_handle,
                          connc->closure_handle->dns.hostcache);
-    Curl_close(connc->closure_handle);
+    Curl_close(&connc->closure_handle);
     sigpipe_restore(&pipe_st);
   }
 }