winex11.drv: Ensure initialized thread data in X11DRV_get_ic.

Link: #201

Author: Etaash-mathamsetty

dlls/winex11.drv/xim.c

@@ -501,7 +501,7 @@ XIC X11DRV_get_ic( HWND hwnd )
     XIC ret;
 
     if (!(data = get_win_data( hwnd ))) return 0;
-    x11drv_thread_data()->last_xic_hwnd = hwnd;
+    x11drv_init_thread_data()->last_xic_hwnd = hwnd;
     if (!(ret = data->xic) && (xim = x11drv_thread_data()->xim))
         ret = data->xic = xic_create( xim, hwnd, data->whole_window );
     release_win_data( data );