From bfcdf2270595ef39065a45341a959e388a143951 Mon Sep 17 00:00:00 2001
From: James Turner <zakalawe@mac.com>
Date: Sun, 29 Nov 2020 16:22:09 +0000
Subject: [PATCH] TerraSync: fix crashes with null file return

Not sure how this is happening, but, check for a null file object
in FileGetRequest::onDone.
---
 simgear/io/HTTPRepository.cxx | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/simgear/io/HTTPRepository.cxx b/simgear/io/HTTPRepository.cxx
index d7db9539..18ac85d0 100644
--- a/simgear/io/HTTPRepository.cxx
+++ b/simgear/io/HTTPRepository.cxx
@@ -994,7 +994,10 @@ HTTPRepository::failure() const
       }
 
       void onDone() override {
-        file->close();
+          if (file) {
+              file->close();
+          }
+
         if (responseCode() == 200) {
           std::string hash =
               strutils::encodeHex(sha1_result(&hashContext), HASH_LENGTH);