Fetch the Wine and root window IDs early

There's no reason to wait until the last moment to fetch these.

src/wine-host/editor.cpp

@@ -174,10 +174,12 @@ ATOM get_window_class() noexcept;
 DeferredWin32Window::DeferredWin32Window(
     MainContext& main_context,
     std::shared_ptr<xcb_connection_t> x11_connection,
-    HWND window) noexcept
+    HWND window)
     : handle(window),
       main_context(main_context),
-      x11_connection(x11_connection) {}
+      x11_connection(x11_connection),
+      wine_window(get_x11_handle(handle)),
+      root_window(get_root_window(*x11_connection, wine_window)) {}
 
 DeferredWin32Window::~DeferredWin32Window() noexcept {
     // NOTE: For some rason, Wine will sometimes try to delete a window twice if
@@ -186,15 +188,7 @@ DeferredWin32Window::~DeferredWin32Window() noexcept {
     //       iZotope Rx plugins. In Renoise this would otherwise trigger an X11
     //       error every time you close such a plugin's editor, and in other
     //       DAWs I've also seen it happen from time to time.
-    try {
-        const xcb_window_t wine_window = get_x11_handle(handle);
-        const xcb_window_t root_window =
-            get_root_window(*x11_connection, wine_window);
-        xcb_reparent_window(x11_connection.get(), wine_window, root_window, 0,
-                            0);
-    } catch (const std::runtime_error& error) {
-        std::cerr << error.what() << std::endl;
-    }
+    xcb_reparent_window(x11_connection.get(), wine_window, root_window, 0, 0);
 
     // XXX: We are already deferring this closing by posting `WM_CLOSE` to the
     //      message loop instead of calling `DestroyWindow()` ourselves, but we

src/wine-host/editor.h

@@ -102,7 +102,7 @@ class DeferredWin32Window {
      */
     DeferredWin32Window(MainContext& main_context,
                         std::shared_ptr<xcb_connection_t> x11_connection,
-                        HWND window) noexcept;
+                        HWND window);
 
     /**
      * Post a `WM_CLOSE` message to the `handle`'s message queue as described
@@ -115,6 +115,9 @@ class DeferredWin32Window {
    private:
     MainContext& main_context;
     std::shared_ptr<xcb_connection_t> x11_connection;
+
+    const xcb_window_t wine_window;
+    const xcb_window_t root_window;
 };
 
 /**