minor fixes, typos

lib/Model/Comment.php

@@ -10,7 +10,7 @@
  * @version   0.22
  */
 
-namespace PrivateBin\model;
+namespace PrivateBin\Model;
 
 use PrivateBin\Sjcl;
 use PrivateBin\Persistence\TrafficLimiter;

lib/Persistence/ServerSalt.php

@@ -49,7 +49,6 @@ class ServerSalt extends AbstractPersistence
             $randomSalt = bin2hex(mcrypt_create_iv(256, MCRYPT_DEV_URANDOM));
         } else {
             // fallback to mt_rand()
-
             for ($i = 0; $i < 256; ++$i) {
                 $randomSalt .= base_convert(mt_rand(), 10, 16);
             }