copy->psz_object_type = msg->psz_object_type;
copy->psz_module = strdup (msg->psz_module);
copy->psz_msg = strdup (msg->psz_msg);
- copy->psz_header = strdup (msg->psz_header);
+ copy->psz_header = msg->psz_header ? strdup (msg->psz_header) : NULL;
return copy;
}