bug symfony#38114 [Console] guard $argv + $token against null, preventing unnecessary exceptions (bilogic)

This PR was submitted for the 4.4 branch but it was merged into the 3.4 branch instead.

Discussion
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[Console] guard $argv + $token against null, preventing unnecessary exceptions

| Q             | A
| ------------- | ---
| Branch?       | 4.4
| Bug fix?      | yes
| Tickets       | Fix symfony#38105
| License       | MIT

This issue was causing an unnecessary exception, leading to difficulty in locating the actual offending code as reported by many cases as detailed in symfony#38105

Commits
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dbe335d guard $argv + $token against null, preventing unnecessary exceptions

Author: nicolas-grekas

src/Symfony/Component/Console/Input/ArgvInput.php

@@ -49,9 +49,7 @@ class ArgvInput extends Input
      */
     public function __construct(array $argv = null, InputDefinition $definition = null)
     {
-        if (null === $argv) {
-            $argv = $_SERVER['argv'];
-        }
+        $argv = $argv ?? $_SERVER['argv'] ?? [];
 
         // strip the application name
         array_shift($argv);