winex11: Remove duplicated foreign window class string constant.

dlls/winex11.drv/window.c

@@ -2171,7 +2171,6 @@ static struct x11drv_win_data *X11DRV_create_win_data( HWND hwnd, const RECT *wi
  */
 HWND create_foreign_window( Display *display, Window xwin )
 {
-    static const WCHAR classW[] = {'_','_','w','i','n','e','_','x','1','1','_','f','o','r','e','i','g','n','_','w','i','n','d','o','w',0};
     static BOOL class_registered;
     struct x11drv_win_data *data;
     HWND hwnd, parent;
@@ -2181,7 +2180,7 @@ HWND create_foreign_window( Display *display, Window xwin )
     unsigned int nchildren;
     XWindowAttributes attr;
     UINT style = WS_CLIPCHILDREN;
-    UNICODE_STRING class_name = RTL_CONSTANT_STRING( classW );
+    UNICODE_STRING class_name = RTL_CONSTANT_STRING( foreign_window_prop );
 
     if (!class_registered)
     {
@@ -2191,7 +2190,7 @@ HWND create_foreign_window( Display *display, Window xwin )
         memset( &class, 0, sizeof(class) );
         class.cbSize        = sizeof(class);
         class.lpfnWndProc   = client_foreign_window_proc;
-        class.lpszClassName = classW;
+        class.lpszClassName = foreign_window_prop;
         if (!NtUserRegisterClassExWOW( &class, &class_name, &version, NULL, 0, 0, NULL ) &&
             RtlGetLastWin32Error() != ERROR_CLASS_ALREADY_EXISTS)
         {
@@ -2227,7 +2226,6 @@ HWND create_foreign_window( Display *display, Window xwin )
         pos.y = attr.y;
     }
 
-    RtlInitUnicodeString( &class_name, classW );
     hwnd = NtUserCreateWindowEx( 0, &class_name, &class_name, NULL, style, pos.x, pos.y,
                                  attr.width, attr.height, parent, 0, NULL, NULL, 0, NULL,
                                  0, FALSE );