refactor: move callExit() to index.php

Author: kenjis

public/index.php

@@ -67,3 +67,7 @@
  */
 
 $app->run();
+
+// Exits the application, setting the exit code for CLI-based applications
+// that might be watching.
+exit(EXIT_SUCCESS);

system/CodeIgniter.php

@@ -372,7 +372,6 @@ public function run(?RouteCollectionInterface $routes = null, bool $returnRespon
         }
 
         $this->sendResponse();
-        $this->callExit(EXIT_SUCCESS);
     }
 
     /**
@@ -1088,6 +1087,8 @@ protected function sendResponse()
      * without actually stopping script execution.
      *
      * @param int $code
+     *
+     * @deprecated 4.4.0 No longer Used. Moved to index.php.
      */
     protected function callExit($code)
     {