More fixes.

Author: demiankatz

module/VuFind/src/VuFind/Auth/Shibboleth.php

@@ -79,7 +79,7 @@ class Shibboleth extends AbstractBase
     /**
      * Read attributes from headers instead of environment variables
      *
-     * @var boolean
+     * @var bool
      */
     protected $useHeaders = false;
 

module/VuFind/src/VuFind/ILS/Driver/Koha.php

@@ -80,7 +80,7 @@ class Koha extends AbstractBase
     /**
      * Should we validate passwords against Koha system?
      *
-     * @var boolean
+     * @var bool
      */
     protected $validatePasswords;
 

module/VuFind/src/VuFind/View/Helper/Root/Icon.php

@@ -92,14 +92,14 @@ class Icon extends AbstractHelper
     /**
      * Are we in right to left text mode?
      *
-     * @var boolean
+     * @var bool
      */
     protected $rtl;
 
     /**
      * Prevent extra work by only appending the stylesheet once
      *
-     * @var boolean
+     * @var bool
      */
     protected $styleAppended = false;