Revert "composer package update"

This reverts commit e979959219e95fc6435ad40f7e60b602f8bbd208.

vendor/composer/ClassLoader.php

@@ -279,7 +279,7 @@ class ClassLoader
      */
     public function setApcuPrefix($apcuPrefix)
     {
-        $this->apcuPrefix = function_exists('apcu_fetch') && filter_var(ini_get('apc.enabled'), FILTER_VALIDATE_BOOLEAN) ? $apcuPrefix : null;
+        $this->apcuPrefix = function_exists('apcu_fetch') && ini_get('apc.enabled') ? $apcuPrefix : null;
     }
 
     /**
@@ -377,7 +377,7 @@ class ClassLoader
             $subPath = $class;
             while (false !== $lastPos = strrpos($subPath, '\\')) {
                 $subPath = substr($subPath, 0, $lastPos);
-                $search = $subPath . '\\';
+                $search = $subPath.'\\';
                 if (isset($this->prefixDirsPsr4[$search])) {
                     $pathEnd = DIRECTORY_SEPARATOR . substr($logicalPathPsr4, $lastPos + 1);
                     foreach ($this->prefixDirsPsr4[$search] as $dir) {