url: make Curl_close() NULLify the pointer toobagder/curl_close-zero

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

Closes #4534

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/easy.c b/lib/easy.c
index cbb65a5f6..001648d49 100644
--- a/lib/easy.c
+++ b/lib/easy.c
@@ -731,7 +731,7 @@ void curl_easy_cleanup(struct Curl_easy *data)
     return;
 
   sigpipe_ignore(data, &pipe_st);
-  Curl_close(data);
+  Curl_close(&data);
   sigpipe_restore(&pipe_st);
 }