use http for upgrade (#587)

* test "TLS initialization failed" issue on windows.

* https ok with desktop services.

diff --git a/gui/upgrade.cc b/gui/upgrade.cc
index 2f91107e741ef0cd90d1e3412a9f1518aa0fdab9..2c0eed1e10d5312fe6613c0d57d39e154fd0c51b 100644 (file)
--- a/gui/upgrade.cc
+++ b/gui/upgrade.cc
@@ -52,7 +52,7 @@ UpgradeCheck::UpgradeCheck(QWidget* parent, QList<Format>& formatList,
   QObject(parent),
   manager_(nullptr),
   replyId_(nullptr),
-  upgradeUrl_(QUrl("https://www.gpsbabel.org/upgrade_check.html")),
+  upgradeUrl_(QUrl("http://www.gpsbabel.org/upgrade_check.html")),
   formatList_(formatList),
   updateStatus_(updateUnknown),
   babelData_(bd)