curl plugin: Fixed a segfault when using <Match> without an Instance.

Thanks to Alexander Golovko for reporting this in
http://bugs.debian.org/732701

diff --git a/src/curl.c b/src/curl.c
index c6e2ae9..ffd4901 100644 (file)
--- a/src/curl.c
+++ b/src/curl.c
@@ -612,7 +612,8 @@ static void cc_submit (const web_page_t *wp, const web_match_t *wm, /* {{{ */
   sstrncpy (vl.plugin, "curl", sizeof (vl.plugin));
   sstrncpy (vl.plugin_instance, wp->instance, sizeof (vl.plugin_instance));
   sstrncpy (vl.type, wm->type, sizeof (vl.type));
-  sstrncpy (vl.type_instance, wm->instance, sizeof (vl.type_instance));
+  if (wm->instance != NULL)
+    sstrncpy (vl.type_instance, wm->instance, sizeof (vl.type_instance));
 
   plugin_dispatch_values (&vl);
 } /* }}} void cc_submit */