Replace some forgotten references to skins/default (#1488591)

.htaccess

@@ -28,7 +28,7 @@ php_value	mbstring.func_overload	0
 
 <IfModule mod_rewrite.c>
 RewriteEngine On
-RewriteRule ^favicon\.ico$ skins/default/images/favicon.ico
+RewriteRule ^favicon\.ico$ skins/larry/images/favicon.ico
 # security rules
 RewriteRule .git - [F]
 RewriteRule ^/?(README(.md)?|INSTALL|LICENSE|SQL|bin|CHANGELOG)$ - [F]

CHANGELOG

@@ -1,6 +1,7 @@
 CHANGELOG Roundcube Webmail
 ===========================
 
+- Fix fallback to Larry skin when configured skin isn't available (#1488591)
 - Fix (workaround) delete operations with some versions of memcache (#1488592)
 - Fix (disable) request validation for spell and spell_html actions
 - Add new DB abstraction layer based on PHP PDO, supporting SQLite3 (#1488332)

program/include/rcube_config.php

@@ -26,6 +26,8 @@
  */
 class rcube_config
 {
+    const DEFAULT_SKIN = 'larry';
+
     private $prop = array();
     private $errors = array();
     private $userprefs = array();
@@ -81,13 +83,13 @@ class rcube_config
                 $this->prop['skin'] = str_replace('skins/', '', unslashify($this->prop['skin_path']));
             }
             else {
-                $this->prop['skin'] = 'larry';
+                $this->prop['skin'] = self::DEFAULT_SKIN;
             }
         }
 
         // larry is the new default skin :-)
         if ($this->prop['skin'] == 'default')
-            $this->prop['skin'] = 'larry';
+            $this->prop['skin'] = self::DEFAULT_SKIN;
 
         // fix paths
         $this->prop['log_dir'] = $this->prop['log_dir'] ? realpath(unslashify($this->prop['log_dir'])) : INSTALL_PATH . 'logs';
@@ -254,7 +256,7 @@ class rcube_config
 
         // larry is the new default skin :-)
         if ($prefs['skin'] == 'default') {
-            $prefs['skin'] = 'larry';
+            $prefs['skin'] = self::DEFAULT_SKIN;
         }
 
         $this->userprefs = $prefs;

program/include/rcube_output_html.php

@@ -149,7 +149,7 @@ class rcube_output_html extends rcube_output
         else {
             $skin_path = $this->config->get('skin_path');
             if (!$skin_path) {
-                $skin_path = 'skins/default';
+                $skin_path = 'skins/' . rcube_config::DEFAULT_SKIN;
             }
             $valid = !$skin;
         }

skins/classic/ie6hacks.css

@@ -7,7 +7,7 @@
 
 img
 {
-  behavior: url(skins/default/pngbehavior.htc);
+  behavior: url(skins/classic/pngbehavior.htc);
 }
 
 #logo