[nginx] Request cleanup code unified, no functional changes.

[Maxim Dounin]

details:   http://hg.nginx.org/nginx/rev/31af4ae8ad9c
branches:  
changeset: 5363:31af4ae8ad9c
user:      Maxim Dounin <mdounin at mdounin.ru>
date:      Wed Sep 04 21:17:00 2013 +0400
description:
Request cleanup code unified, no functional changes.

Additionally, detaching a cleanup chain from a request is a bit more resilent
to various bugs if any.

diffstat:

 src/http/ngx_http_request.c |  7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)

diffs (20 lines):

diff --git a/src/http/ngx_http_request.c b/src/http/ngx_http_request.c
--- a/src/http/ngx_http_request.c
+++ b/src/http/ngx_http_request.c
@@ -3343,10 +3343,15 @@ ngx_http_free_request(ngx_http_request_t
         return;
     }
 
-    for (cln = r->cleanup; cln; cln = cln->next) {
+    cln = r->cleanup;
+    r->cleanup = NULL;
+
+    while (cln) {
         if (cln->handler) {
             cln->handler(cln->data);
         }
+
+        cln = cln->next;
     }
 
 #if (NGX_STAT_STUB)