[metacity/gnome-3-22] tile-preview: avoid a deprecation warning

[Alberts Muktupāvels <muktupavels src gnome org>]

commit 82c4a6e4af49e4a79dfadb985de8978e1ec1c1b1
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Mon Oct 24 19:04:25 2016 +0300

    tile-preview: avoid a deprecation warning

 src/ui/tile-preview.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/src/ui/tile-preview.c b/src/ui/tile-preview.c
index be3b2b5..6d46256 100644
--- a/src/ui/tile-preview.c
+++ b/src/ui/tile-preview.c
@@ -220,7 +220,9 @@ meta_tile_preview_show (MetaTilePreview *preview,
       cairo_region_t *outer_region, *inner_region;
       GdkRGBA black = {.0, .0, .0, 1.0};
 
+      G_GNUC_BEGIN_IGNORE_DEPRECATIONS
       gdk_window_set_background_rgba (window, &black);
+      G_GNUC_END_IGNORE_DEPRECATIONS
 
       outer_rect.x = outer_rect.y = 0;
       outer_rect.width = preview->tile_rect.width;