[DI] Minor performance tweak in PriorityTaggedServiceTrait

Author: Iltar van der Berg

Descriptor/TextDescriptor.php

@@ -210,9 +210,9 @@ protected function describeApplication(Application $application, array $options
             }
 
             // calculate max. width based on available commands per namespace
-            $width = $this->getColumnWidth(call_user_func_array('array_merge', array_map(function ($namespace) use ($commands) {
+            $width = $this->getColumnWidth(array_merge(...array_values(array_map(function ($namespace) use ($commands) {
                 return array_intersect($namespace['commands'], array_keys($commands));
-            }, $namespaces)));
+            }, $namespaces))));
 
             if ($describedNamespace) {
                 $this->writeText(sprintf('<comment>Available commands for the "%s" namespace:</comment>', $describedNamespace), $options);