Simplify extraction of abbreviation for active application check

diff --git a/wcfsetup/install/files/lib/system/application/ApplicationHandler.class.php b/wcfsetup/install/files/lib/system/application/ApplicationHandler.class.php
index 323ec40b98c1f9a76bee1fe9749f017494ddf906..ecb4c514f20e9089b6a1b478880a059544224775 100644 (file)
--- a/wcfsetup/install/files/lib/system/application/ApplicationHandler.class.php
+++ b/wcfsetup/install/files/lib/system/application/ApplicationHandler.class.php
@@ -135,7 +135,7 @@ class ApplicationHandler extends SingletonFactory
 
         $request = RequestHandler::getInstance()->getActiveRequest();
         if ($request !== null) {
-            $abbreviation = \substr($request->getClassName(), 0, \mb_strpos($request->getClassName(), '\\'));
+            [$abbreviation] = \explode('\\', $request->getClassName(), 2);
 
             return $this->getApplication($abbreviation);
         }