Pin QtDBus shared library on Windows after being loaded by X-Plane

refs #850

src/xbus/main.cpp

@@ -14,6 +14,7 @@
 #include "utils.h"
 #include "traffic.h"
 #include "service.h"
+#include "blackmisc/dbus.h"
 #include <XPLM/XPLMPlanes.h>
 
 #if ! defined(XPLM210)
@@ -57,6 +58,10 @@ PLUGIN_API int XPluginEnable()
     QXPlaneEventLoop::exec();
 
     g_plugin = new XBus::CPlugin;
+
+    // Here we can be safely assume that QtDBus was loaded by the process
+    preventQtDBusDllUnload();
+
     return 1;
 }