remove unused create var on object creation from string when possible

Author: samsonasik

src/Handler/Logging.php

@@ -98,8 +98,7 @@ private function isExists(
                 } catch (RuntimeException $e) {
                     // use \Zend\Db\Adapter\Exception\RuntimeException but do here
                     // to avoid too much deep trace from Zend\Db classes
-                    $exceptionClass = \get_class($e);
-                    throw new $exceptionClass($e->getMessage());
+                    throw new ${!${''} = \get_class($e)}($e->getMessage());
                 }
             }
         }