diff -r 2b5a26ddbb69 -r 31a8779e91d4 libpurple/protocols/jabber/jabber.c
--- a/libpurple/protocols/jabber/jabber.c	Tue May 06 18:27:58 2014 +0200
+++ b/libpurple/protocols/jabber/jabber.c	Wed May 07 11:07:45 2014 +0200
@@ -473,6 +473,8 @@
 	gc = js->gc;
 	account = purple_connection_get_account(gc);
 
+	g_return_if_fail(data != NULL);
+
 	/* because printing a tab to debug every minute gets old */
 	if(strcmp(data, "\t")) {
 		const char *username;