From 39fd38a948762d24f5860adb0bf8c78b6d65d79a Mon Sep 17 00:00:00 2001
From: Valentin Bartenev <vbart@nginx.com>
Date: Thu, 19 Oct 2017 17:26:56 +0300
Subject: [PATCH] Fixed matching of empty version.

---
 src/nxt_string.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/nxt_string.c b/src/nxt_string.c
index 8ac873b1..8225cd9b 100644
--- a/src/nxt_string.c
+++ b/src/nxt_string.c
@@ -416,6 +416,10 @@ nxt_strvers_match(u_char *version, u_char *prefix, size_t length)
 {
     u_char  next, last;
 
+    if (length == 0) {
+        return 1;
+    }
+
     if (nxt_strncmp(version, prefix, length) == 0) {
 
         next = version[length];