Avoid dereferencing potential null value

diff --git a/libs/esl/testserver.c b/libs/esl/testserver.c
index 1477d8d71ebc489d6b8f7a7645f643da2f6a0019..f8eb78d1f3dc9202114b2dc97c2646b16de2b390 100644 (file)
--- a/libs/esl/testserver.c
+++ b/libs/esl/testserver.c
@@ -32,7 +32,7 @@ static void mycallback(esl_socket_t server_sock, esl_socket_t client_sock, struc
                        if (type && !strcasecmp(type, "text/disconnect-notice")) {
                                const char *dispo = esl_event_get_header(handle.last_event, "content-disposition");
                                esl_log(ESL_LOG_INFO, "Got a disconnection notice dispostion: [%s]\n", dispo ? dispo : "");
-                               if (!strcmp(dispo, "linger")) {
+                               if (dispo && !strcmp(dispo, "linger")) {
                                        done = 1;
                                        esl_log(ESL_LOG_INFO, "Waiting 5 seconds for any remaining events.\n");
                                        exp = time(NULL) + 5;