From 159fedcef69e236ca83a36cfa3c60f404e5837eb Mon Sep 17 00:00:00 2001
From: Alex Rock Ancelet <pierstoval@gmail.com>
Date: Thu, 30 Nov 2017 20:02:12 +0100
Subject: [PATCH] [HttpKernel] Fix issue when resetting DumpDataCollector

---
 .../Component/HttpKernel/DataCollector/DumpDataCollector.php  | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/Symfony/Component/HttpKernel/DataCollector/DumpDataCollector.php b/src/Symfony/Component/HttpKernel/DataCollector/DumpDataCollector.php
index f9730b1485045..d0ca671e056b4 100644
--- a/src/Symfony/Component/HttpKernel/DataCollector/DumpDataCollector.php
+++ b/src/Symfony/Component/HttpKernel/DataCollector/DumpDataCollector.php
@@ -166,7 +166,9 @@ public function collect(Request $request, Response $response, \Exception $except
 
     public function reset()
     {
-        $this->stopwatch->reset();
+        if ($this->stopwatch) {
+            $this->stopwatch->reset();
+        }
         $this->data = array();
         $this->dataCount = 0;
         $this->isCollected = false;