From 7a65eb1da9caeb4d2657c2c08f4ed998dd0b2764 Mon Sep 17 00:00:00 2001
From: Tyson Andre <tysonandre775@hotmail.com>
Date: Sun, 12 Jan 2020 12:46:08 -0500
Subject: [PATCH] Fix required parameter after optional in Psalm (#2609)

Psalm supports php 7.1 at minimum, so this is no longer necessary.
---
 src/Psalm/Internal/Analyzer/TypeAnalyzer.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/Psalm/Internal/Analyzer/TypeAnalyzer.php b/src/Psalm/Internal/Analyzer/TypeAnalyzer.php
index 09c05ccf2..5a6121e22 100644
--- a/src/Psalm/Internal/Analyzer/TypeAnalyzer.php
+++ b/src/Psalm/Internal/Analyzer/TypeAnalyzer.php
@@ -293,13 +293,13 @@ class TypeAnalyzer
     /**
      * Used for comparing signature typehints, uses PHP's light contravariance rules
      *
-     * @param  Type\Union   $input_type
+     * @param  ?Type\Union  $input_type
      * @param  Type\Union   $container_type
      *
      * @return bool
      */
     public static function isContainedByInPhp(
-        Type\Union $input_type = null,
+        ?Type\Union $input_type,
         Type\Union $container_type
     ) {
         if (!$input_type) {