From fb3bbf37e806de10641f3de37b25e410be00067a Mon Sep 17 00:00:00 2001
From: arminabf <a.abfalterer@gmail.com>
Date: Mon, 26 Sep 2016 13:58:31 +0200
Subject: [PATCH] revert error message assignment for older versions

as errstr is only available since version > 2.2
---
 apache2/mod_security2.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/apache2/mod_security2.c b/apache2/mod_security2.c
index ffb450b4..93c2fbe4 100644
--- a/apache2/mod_security2.c
+++ b/apache2/mod_security2.c
@@ -1150,7 +1150,7 @@ static void hook_error_log(const char *file, int line, int level, apr_status_t s
     em->line = line;
     em->level = level;
     em->status = status;
-    em->message = apr_pstrdup(msr->mp, errstr);
+    if (fmt != NULL) em->message = apr_pstrdup(msr->mp, fmt);
 #endif
     /* Remove \n from the end of the message */
     if (em->message != NULL) {