From cd21287ebcb15f77e4ad2107dac43efa8004d494 Mon Sep 17 00:00:00 2001
From: terrafrost <terrafrost@php.net>
Date: Mon, 16 Sep 2019 07:55:47 -0500
Subject: [PATCH] SSH2: only do fclose($this->fsock) if doing so won't yield
 error

---
 phpseclib/Net/SSH2.php | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/phpseclib/Net/SSH2.php b/phpseclib/Net/SSH2.php
index d7124041..571e4c99 100644
--- a/phpseclib/Net/SSH2.php
+++ b/phpseclib/Net/SSH2.php
@@ -4157,7 +4157,9 @@ class Net_SSH2
         }
 
         $this->bitmap = 0;
-        fclose($this->fsock);
+        if (is_resource($this->fsock) && get_resource_type($this->fsock) == 'stream') {
+            fclose($this->fsock);
+        }
 
         return false;
     }