Fixed small issue

diff --git a/wcfsetup/install/files/lib/system/style/StyleHandler.class.php b/wcfsetup/install/files/lib/system/style/StyleHandler.class.php
index a8434c3e061c711b22d8d6c9c687a5a20ceb6f5e..6240793d494ccba2205511abb14c51e84edf2ec7 100644 (file)
--- a/wcfsetup/install/files/lib/system/style/StyleHandler.class.php
+++ b/wcfsetup/install/files/lib/system/style/StyleHandler.class.php
@@ -144,8 +144,10 @@ class StyleHandler extends SingletonFactory {
         */
        public function resetStylesheet(Style $style) {
                $stylesheets = glob(WCF_DIR.'style/style-'.$style->styleID.'*.css');
-               foreach ($stylesheets as $stylesheet) {
-                       @unlink($stylesheet);
+               if ($stylesheets !== false) {
+                       foreach ($stylesheets as $stylesheet) {
+                               @unlink($stylesheet);
+                       }
                }
        }