Index: include/asterisk/netsock2.h
===================================================================
--- include/asterisk/netsock2.h	(revision 279234)
+++ include/asterisk/netsock2.h	(working copy)
@@ -82,6 +82,10 @@
  */
 static inline int ast_sockaddr_isnull(const struct ast_sockaddr *addr)
 {
+	if (!addr) {
+		return 1;
+	}
+
 	return addr->len == 0;
 }