From a042281726cdeb3048a815acf4f090780004e1cf Mon Sep 17 00:00:00 2001
From: Dmitry Volyntsev <xeioex@nginx.com>
Date: Mon, 11 Jan 2021 19:53:09 +0000
Subject: [PATCH] Allowing to reserve 0 bytes in njs_chb_reserve() for
 consistency.

---
 src/njs_chb.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/src/njs_chb.c b/src/njs_chb.c
index 718cfe6d..6c54ec8f 100644
--- a/src/njs_chb.c
+++ b/src/njs_chb.c
@@ -34,10 +34,6 @@ njs_chb_reserve(njs_chb_t *chain, size_t size)
 {
     njs_chb_node_t  *n;
 
-    if (njs_slow_path(size == 0)) {
-        return NULL;
-    }
-
     n = chain->last;
 
     if (njs_fast_path(n != NULL && njs_chb_node_room(n) >= size)) {
-- 
2.47.3