From 194854b2218cba6241e7c9d4ee931a4d84a75536 Mon Sep 17 00:00:00 2001
From: Rosen Penev <rosenp@gmail.com>
Date: Mon, 15 Jul 2019 18:18:03 -0700
Subject: [PATCH] Fix format security warning in newer GCC

In OpenWrt, -Werror=format-string is passed, making this fail compilation.

printf style functions are meant to work with format strings anyway.
---
 src/io.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/io.c b/src/io.c
index 9c4fa9fb..f7b9ec23 100644
--- a/src/io.c
+++ b/src/io.c
@@ -62,7 +62,7 @@ nc_ssl_error_get_reasons(void)
             ERRMEM;
             return NULL;
         }
-        reason_len += sprintf(reasons + reason_len, ERR_reason_error_string(e));
+        reason_len += sprintf(reasons + reason_len, "%s", ERR_reason_error_string(e));
     }
 
     return reasons;