refactor: change the if statement to a ternary operator

Author: kenjis

system/CodeIgniter.php

@@ -834,11 +834,9 @@ protected function runController($class)
             // This is a Web request or PHP CLI request
             $params = $this->router->params();
 
-            if (method_exists($class, '_remap')) {
-                $output = $class->_remap($this->method, ...$params);
-            } else {
-                $output = $class->{$this->method}(...$params);
-            }
+            $output = method_exists($class, '_remap')
+                ? $class->_remap($this->method, ...$params)
+                : $class->{$this->method}(...$params);
         }
 
         $this->benchmark->stop('controller');