- bug 172 fixed: crash when changing password with an external users

table. The same kind of correction was also made in picture.php and
  register.php.


git-svn-id: http://piwigo.org/svn/trunk@902 68402e56-0260-453c-a942-63ccdbb3a9ee

profile.php

@@ -77,7 +77,7 @@ if (isset($_POST['validate']))
     
     // changing password requires old password
     $query = '
-SELECT password
+SELECT '.$conf['user_fields']['password'].' AS password
   FROM '.USERS_TABLE.'
   WHERE '.$conf['user_fields']['id'].' = \''.$userdata['id'].'\'
 ;';