error out if sam handshake couldn't be done

Signed-off-by: AGentooCat <agentoocat@mail.i2p>

src/sam.c

@@ -681,7 +681,8 @@ void free_lookup(struct I2Host *host) {
 void opensam(port_t port, char *me, char *dest) {
     if (asprintf(&sessid, "ITooMail-%s", me) < 1)
 	logno(CRIT, "couldn't allocate memory for SAM session ID");
-    ctlsock = getsamconn((ctlport = port), 0);
+    if ((ctlsock = getsamconn((ctlport = port), 0)) == -1)
+	log(CRIT, "couldn't handshake initial SAM session");
     pthread_mutex_init(&samlock, NULL);
 
     if (!(ping_tid = malloc(sizeof(pthread_t))))