[gtk/wip/nirbheek/gtk-3-24-meson] fixup! meson: Sync build files with master and update to 3.24

[Nirbheek Chauhan <nirbheekc src gnome org>]

commit 77e240ca053210b6d3ce720279b33b18efac94be
Author: Nirbheek Chauhan <nirbheek centricular com>
Date:   Tue Nov 20 17:17:15 2018 +0530

    fixup! meson: Sync build files with master and update to 3.24

 gdk/meson.build | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/gdk/meson.build b/gdk/meson.build
index c64e231bf5..97d1531a9c 100644
--- a/gdk/meson.build
+++ b/gdk/meson.build
@@ -79,6 +79,7 @@ gdk_public_headers = files(
 )
 
 deprecated_h_sources = files('deprecated/gdkcolor.h')
+install_headers (gdk_public_headers + deprecated_h_sources, subdir : 'gtk-3.0/gdk')
 
 # This variable is unused, but added just for completeness
 gdk_private_headers = files(