Pledge.

Index: mutt_sasl.h
--- mutt_sasl.h.orig
+++ mutt_sasl.h
@@ -25,6 +25,7 @@
 
 #include "mutt_socket.h"
 
+int mutt_sasl_start (void);
 int mutt_sasl_client_new(CONNECTION*, sasl_conn_t**);
 sasl_callback_t *mutt_sasl_get_callbacks(ACCOUNT*);
 int mutt_sasl_interact(sasl_interact_t*);
