[metacity] compositor: remove MetaScreen parameter from add_win

[Alberts Muktupāvels <muktupavels src gnome org>]

commit 9e9db08527a4c288b772e67267ae8e93e7ca4527
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Mon Mar 6 01:14:42 2017 +0200

    compositor: remove MetaScreen parameter from add_win

 src/compositor/meta-compositor-xrender.c |    8 +++-----
 1 files changed, 3 insertions(+), 5 deletions(-)
---
diff --git a/src/compositor/meta-compositor-xrender.c b/src/compositor/meta-compositor-xrender.c
index 6764c22..3b39654 100644
--- a/src/compositor/meta-compositor-xrender.c
+++ b/src/compositor/meta-compositor-xrender.c
@@ -2168,11 +2168,10 @@ get_window_type (MetaDisplay    *display,
 /* Must be called with an error trap in place */
 static void
 add_win (MetaCompositorXRender *xrender,
-         MetaScreen            *screen,
          MetaWindow            *window,
          Window                 xwindow)
 {
-  MetaDisplay *display = meta_screen_get_display (screen);
+  MetaDisplay *display = meta_screen_get_display (xrender->screen);
   Display *xdisplay = meta_display_get_xdisplay (display);
   MetaCompWindow *cw;
   gulong event_mask;
@@ -2185,7 +2184,7 @@ add_win (MetaCompositorXRender *xrender,
     return;
 
   cw = g_new0 (MetaCompWindow, 1);
-  cw->screen = screen;
+  cw->screen = xrender->screen;
   cw->window = window;
   cw->id = xwindow;
 
@@ -2955,7 +2954,6 @@ meta_compositor_xrender_add_window (MetaCompositor *compositor,
                                     MetaWindow     *window)
 {
   MetaCompositorXRender *xrender = META_COMPOSITOR_XRENDER (compositor);
-  MetaDisplay *display = meta_compositor_get_display (compositor);
   MetaFrame *frame = meta_window_get_frame (window);
   Window xwindow;
 
@@ -2965,7 +2963,7 @@ meta_compositor_xrender_add_window (MetaCompositor *compositor,
     xwindow = meta_window_get_xwindow (window);
 
   meta_error_trap_push (NULL);
-  add_win (xrender, display->screen, window, xwindow);
+  add_win (xrender, window, xwindow);
   meta_error_trap_pop (NULL);
 }