minor #14089 CS: Binary operators should be arounded by at least one space (keradus)

This PR was merged into the 2.3 branch.

Discussion
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CS: Binary operators should be arounded by at least one space

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | ?
| Fixed tickets | N/A
| License       | MIT
| Doc PR        | N/A

Update before upcoming changes on PHP CS Fixer 1.7

To keep fabbot.io happy ;)

Commits
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ec2cec6 CS: Binary operators should be arounded by at least one space

Author: fabpot

Loader/PoFileLoader.php

@@ -165,7 +165,7 @@ private function addMessage(array &$messages, array $item)
                 end($plurals);
                 $count = key($plurals);
                 // Fill missing spots with '-'.
-                $empties = array_fill(0, $count+1, '-');
+                $empties = array_fill(0, $count + 1, '-');
                 $plurals += $empties;
                 ksort($plurals);
                 $messages[stripcslashes($item['ids']['plural'])] = stripcslashes(implode('|', $plurals));