From fc6bf4ceecb5d47327f54d48d4d4f67b17da956d Mon Sep 17 00:00:00 2001
From: Sherakama <sherakama@gmail.com>
Date: Fri, 27 Jul 2018 03:07:07 -0700
Subject: [PATCH] Protect against missing result value (#91)

---
 src/PrestissimoFileFetcher.php | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/PrestissimoFileFetcher.php b/src/PrestissimoFileFetcher.php
index fe8f4d3..30b7c23 100644
--- a/src/PrestissimoFileFetcher.php
+++ b/src/PrestissimoFileFetcher.php
@@ -68,7 +68,9 @@ protected function fetchWithPrestissimo($version, $destination, $override) {
       $result = $multi->getFinishedResults();
       $successCnt += $result['successCnt'];
       $failureCnt += $result['failureCnt'];
-      $errors += $result['errors'];
+      if (isset($result['errors'])) {
+        $errors += $result['errors'];
+      }
       if ($this->progress) {
         foreach ($result['urls'] as $url) {
           $this->io->writeError("  - Downloading <comment>$successCnt</comment>/<comment>$totalCnt</comment>: <info>$url</info>", TRUE);