Adapted for 0.30.2 from upstream patch



From 433177dd98f81585748e697ebaa104d0ad76a234 Mon Sep 17 00:00:00 2001
From: Levi Morrison <levi.morrison@datadoghq.com>
Date: Fri, 23 Aug 2019 08:06:27 -0600
Subject: [PATCH] Avoid reserved word "fn"

In PHP 7.4 and forward "fn" is a keyword.
Also fixes misspelling in the name of the file.
diff --git a/tests/ext/desctructor_called_when_this_gets_out_of_scope.phpt b/tests/ext/desctructor_called_when_this_gets_out_of_scope.phpt
--- a/tests/ext/desctructor_called_when_this_gets_out_of_scope.phpt
+++ b/tests/ext/desctructor_called_when_this_gets_out_of_scope.phpt
@@ -16,18 +16,18 @@ class Test {
 dd_trace("Test", "m", function() {
     return dd_trace_forward_call() . " OVERRIDE";
 });
-function fn() {
+function func() {
     $test = new Test();
     echo $test->m() . PHP_EOL;
-    echo "FN" . PHP_EOL;
+    echo "FUNC" . PHP_EOL;
 }
 
-fn();
+func();
 echo "FINISH" . PHP_EOL;
 ?>
 
 --EXPECT--
 M OVERRIDE
-FN
+FUNC
 DESTRUCT
 FINISH