From 1ffff099c164244b25429a0b726639c167d179f1 Mon Sep 17 00:00:00 2001
From: Andrew Thompson <andrew@hijacked.us>
Date: Mon, 18 Oct 2010 03:18:35 -0400
Subject: [PATCH] Avoid checking the lengh of a null string.

---
 src/mod/event_handlers/mod_erlang_event/ei_helpers.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/mod/event_handlers/mod_erlang_event/ei_helpers.c b/src/mod/event_handlers/mod_erlang_event/ei_helpers.c
index 9935aff075..aca2497052 100644
--- a/src/mod/event_handlers/mod_erlang_event/ei_helpers.c
+++ b/src/mod/event_handlers/mod_erlang_event/ei_helpers.c
@@ -377,10 +377,11 @@ switch_status_t initialise_ei(struct ei_cnode_s *ec)
 				// init the resolver
 				res_init();
 			}
-			if (!zstr_buf(_res.dnsrch[0])) {
+			if (_res.dnsrch[0] && !zstr_buf(_res.dnsrch[0])) {
 				strncat(thishostname, ".", 1);
 				strncat(thishostname, _res.dnsrch[0], EI_MAXHOSTNAMELEN - strlen(thishostname));
 			}
+
 		}
 		snprintf(thisnodename, MAXNODELEN + 1, "%s@%s", prefs.nodename, thishostname);
 	}