Fix spacing

installer/rcube_install.php

@@ -193,16 +193,16 @@ class rcube_install
         $value = '%p';
       }
       else if ($prop == 'default_folders') {
-	    $value = array();
+        $value = array();
-	    foreach ($this->config['default_folders'] as $_folder) {
+        foreach ($this->config['default_folders'] as $_folder) {
-	      switch ($_folder) {
+          switch ($_folder) {
-	      case 'Drafts': $_folder = $this->config['drafts_mbox']; break;
+          case 'Drafts': $_folder = $this->config['drafts_mbox']; break;
-	      case 'Sent':   $_folder = $this->config['sent_mbox']; break;
+          case 'Sent':   $_folder = $this->config['sent_mbox']; break;
-	      case 'Junk':   $_folder = $this->config['junk_mbox']; break;
+          case 'Junk':   $_folder = $this->config['junk_mbox']; break;
-	      case 'Trash':  $_folder = $this->config['trash_mbox']; break;
+          case 'Trash':  $_folder = $this->config['trash_mbox']; break;
           }
-	    if (!in_array($_folder, $value))
+        if (!in_array($_folder, $value))
-	      $value[] = $_folder;
+          $value[] = $_folder;
         }
       }
       else if (is_bool($default)) {