From 60af226890a190ad3aa25ab46eff9e1d0e7e6938 Mon Sep 17 00:00:00 2001
From: Anthony Minessale <anthm@freeswitch.org>
Date: Mon, 12 Jul 2010 15:37:07 -0500
Subject: [PATCH] deal with empty param to serialize()

---
 libs/esl/src/esl_oop.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libs/esl/src/esl_oop.cpp b/libs/esl/src/esl_oop.cpp
index 1b6629c066..231950f892 100644
--- a/libs/esl/src/esl_oop.cpp
+++ b/libs/esl/src/esl_oop.cpp
@@ -355,7 +355,7 @@ const char *ESLevent::serialize(const char *format)
 		return "";
 	}
 
-	if (!strcasecmp(format, "json")) {
+	if (format && !strcasecmp(format, "json")) {
 		esl_event_serialize_json(event, &serialized_string);
 		return serialized_string;
 	}