[nginx] Leave chain in ngx_chain_add_copy() in consistent state on errors.

[Sergey Kandaurov]

details:   http://hg.nginx.org/nginx/rev/da9941c9b01b
branches:  
changeset: 7282:da9941c9b01b
user:      Sergey Kandaurov <pluknet at nginx.com>
date:      Mon Jun 04 18:47:54 2018 +0300
description:
Leave chain in ngx_chain_add_copy() in consistent state on errors.

diffstat:

 src/core/ngx_buf.c |  1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diffs (11 lines):

diff -r bd6563e81cea -r da9941c9b01b src/core/ngx_buf.c
--- a/src/core/ngx_buf.c	Wed May 30 15:40:34 2018 +0300
+++ b/src/core/ngx_buf.c	Mon Jun 04 18:47:54 2018 +0300
@@ -137,6 +137,7 @@ ngx_chain_add_copy(ngx_pool_t *pool, ngx
     while (in) {
         cl = ngx_alloc_chain_link(pool);
         if (cl == NULL) {
+            *ll = NULL;
             return NGX_ERROR;
         }