Fix newline-eof compiler warning (#347)

Add EOF newline to session.c.

Signed-off-by: Rhys Mainwaring <rhys.mainwaring@me.com>

src/c/core/session/session.c

@@ -1269,4 +1269,4 @@ bool run_session_until_sync(
     } while (remaining_time > 0 && !session->synchronized);
 
     return session->synchronized;
-}
+}