From d8cffaed4064caf3b054d75e081a803c0b2cf6ec Mon Sep 17 00:00:00 2001
From: Stefan Ritt <stefan.ritt@psi.ch>
Date: Fri, 3 Feb 2012 15:50:14 +0000
Subject: [PATCH] Check error pointer

---
 mxml.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/mxml.c b/mxml.c
index 8ce340b..02c1d18 100755
--- a/mxml.c
+++ b/mxml.c
@@ -1274,13 +1274,15 @@ PMXML_NODE read_error(PMXML_NODE root, const char *file_name, int line_number, c
    else
       sprintf(str, "XML read error, line %d: ", line_number);
    msg = (char *)mxml_malloc(error_size);
-   strlcpy(error, str, error_size);
+   if (error)
+      strlcpy(error, str, error_size);
 
    va_start(argptr, format);
    vsprintf(str, (char *) format, argptr);
    va_end(argptr);
 
-   strlcat(error, str, error_size);
+   if (error)
+      strlcat(error, str, error_size);
    if (error_line)
       *error_line = line_number;