Fix for ESL-44, thank you to Lakschmanan for providing the Patch

diff --git a/libs/esl/src/esl_oop.cpp b/libs/esl/src/esl_oop.cpp
index 231950f892e9bb7cbc7fa9446808721462dc9d25..0ea88e17cc0e2721fff8fe49289dab83007b355b 100644 (file)
--- a/libs/esl/src/esl_oop.cpp
+++ b/libs/esl/src/esl_oop.cpp
@@ -351,6 +351,10 @@ const char *ESLevent::serialize(const char *format)
 
        esl_safe_free(serialized_string);
        
+       if (format == NULL) {
+               format = "text";
+       }
+       
        if (!event) {
                return "";
        }