From 1c6203a9f73e1fc09016fa16bcb0d4cbaabb1810 Mon Sep 17 00:00:00 2001
From: Pol Dellaiera <pol.dellaiera@protonmail.com>
Date: Mon, 10 Feb 2020 13:18:57 +0100
Subject: [PATCH] PHP 7.4 fix - Create a temporary variable to prevent Fatal
 error.

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

diff --git a/src/DocBlock/Tags/InvalidTag.php b/src/DocBlock/Tags/InvalidTag.php
index df674ef..d15818e 100644
--- a/src/DocBlock/Tags/InvalidTag.php
+++ b/src/DocBlock/Tags/InvalidTag.php
@@ -104,7 +104,9 @@ final class InvalidTag implements Tag
         do {
             $trace = array_map(
                 static function (array $call) use ($flatten) : array {
-                    array_walk_recursive($call['args'] ?? [], $flatten);
+                    $args = $call['args'] ?? [];
+
+                    array_walk_recursive($args, $flatten);
 
                     return $call;
                 },