From 7d2486c54678d7e6da2ec80411edba5bb8b5a5b7 Mon Sep 17 00:00:00 2001
From: Dan Untenzu <mail@pixelbrackets.de>
Date: Sat, 6 Apr 2019 15:45:17 +0200
Subject: [PATCH] ImageMinify: Prevent undefined variable error

If the given imagefile is not one of the defaults (png/jpg/gif/svg)
and no minifier was passed to the ImageMinify task
a warning for an undefined variable is show.

Prevent this by setting an empty string to the beginning
of the file check.

Refs #852
---
 src/Task/Assets/ImageMinify.php | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/Task/Assets/ImageMinify.php b/src/Task/Assets/ImageMinify.php
index 1aa625932..e90e20a0e 100644
--- a/src/Task/Assets/ImageMinify.php
+++ b/src/Task/Assets/ImageMinify.php
@@ -339,6 +339,8 @@ protected function minify($files)
 
         // loop through the files
         foreach ($files as $from => $to) {
+            $minifier = '';
+
             if (!isset($this->minifier)) {
                 // check filetype based on the extension
                 $extension = strtolower(pathinfo($from, PATHINFO_EXTENSION));