From 6cd63cc0f36935ccc092165daff870870eb4df88 Mon Sep 17 00:00:00 2001
From: Matthew Brown <github@muglug.com>
Date: Sun, 30 Oct 2016 12:51:41 -0400
Subject: [PATCH] Fix nullref

---
 src/Psalm/Checker/Statements/ExpressionChecker.php | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/Psalm/Checker/Statements/ExpressionChecker.php b/src/Psalm/Checker/Statements/ExpressionChecker.php
index 4ac6fa02a..1b979abb1 100644
--- a/src/Psalm/Checker/Statements/ExpressionChecker.php
+++ b/src/Psalm/Checker/Statements/ExpressionChecker.php
@@ -2629,6 +2629,10 @@ class ExpressionChecker
 
 
                 foreach ($closure_arg->params as $i => $closure_param) {
+                    if (!$array_arg_types[$i]) {
+                        continue;
+                    }
+
                     $translated_param = FunctionLikeChecker::getTranslatedParam(
                         $closure_param,
                         $statements_checker->getAbsoluteClass(),