Less lines of code please.

lib/Predis.php

@@ -519,8 +519,7 @@ class MultiExecContext {
                 }
                 $this->reset();
                 if (isset($this->_options['on_retry']) && is_callable($this->_options['on_retry'])) {
-                    $retryCallback = $this->_options['on_retry'];
-                    call_user_func($retryCallback, $this, $attemptsLeft);
+                    call_user_func($this->_options['on_retry'], $this, $attemptsLeft);
                 }
                 continue;
             }