Only read /dev/random once when the program starts

rather than for every connection, to "conserve entropy".

--HG--
extra : convert_revision : 21df240b71c0af8454725dec9abb428dd4bb97a2

cli-session.c

@@ -76,12 +76,14 @@ static const struct ChanType *cli_chantypes[] = {
 
 void cli_session(int sock, char* remotehost) {
 
+	seedrandom();
+
 	crypto_init();
+
 	common_session_init(sock, remotehost);
 
 	chaninitialise(cli_chantypes);
 
-
 	/* Set up cli_ses vars */
 	cli_session_init();
 
@@ -91,12 +93,8 @@ void cli_session(int sock, char* remotehost) {
 	/* Exchange identification */
 	session_identification();
 
-	seedrandom();
-
 	send_msg_kexinit();
 
-	/* XXX here we do stuff differently */
-
 	session_loop(cli_sessionloop);
 
 	/* Not reached */