Use SW_MINIMIZE instead of SW_HIDE

Before deferring closing the editor. This still gets rid of that issue
in Wine's X11drv that would result in a double destroy, and it also gets
rid of a delay that would still occur in Carla.

src/wine-host/editor.cpp

@@ -261,7 +261,7 @@ Editor::~Editor() {
     // TODO: Check if we also have to do something special for
     //       editor_double_embed (probalby not)
     // TODO: Retest XEmbed after all of these changes
-    ShowWindow(win32_handle.get(), SW_HIDE);
+    ShowWindow(win32_handle.get(), SW_MINIMIZE);
 }
 
 HWND Editor::get_win32_handle() const {