From 03b92c9ba186c9ec1a01dbff9698f909d98d524a Mon Sep 17 00:00:00 2001
From: Anthony Minessale <anthm@freeswitch.org>
Date: Fri, 25 May 2012 11:02:51 -0500
Subject: [PATCH] FS-4251 --resolve just a silly oversight in the code specific
 to this use case, thanks

---
 src/switch_core_io.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/src/switch_core_io.c b/src/switch_core_io.c
index f20fa7bff9..83f8ae6d26 100644
--- a/src/switch_core_io.c
+++ b/src/switch_core_io.c
@@ -1469,6 +1469,10 @@ SWITCH_DECLARE(switch_status_t) switch_core_session_send_dtmf_string(switch_core
 
 	switch_assert(session != NULL);
 
+	if (zstr(dtmf_string)) {
+		return SWITCH_STATUS_FALSE;
+	}
+
 	if (*dtmf_string == '~') {
 		dtmf_string++;
 		dtmf.flags = 0;
@@ -1478,9 +1482,6 @@ SWITCH_DECLARE(switch_status_t) switch_core_session_send_dtmf_string(switch_core
 		return SWITCH_STATUS_FALSE;
 	}
 
-	if (zstr(dtmf_string)) {
-		return SWITCH_STATUS_FALSE;
-	}
 
 	if (strlen(dtmf_string) > 99) {
 		switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "Attempt to send very large dtmf string ignored!\n");