[libwnck] meson: Fix -Dstartup_notification=enabled/disabled

[Marco Trevisan <marcotrevi src gnome org>]

commit 0d9ff7db63af568feef8e8c566e249058ccfcb4e
Author: Jan Alexander Steffens (heftig) <jan steffens gmail com>
Date:   Wed May 1 14:05:44 2019 +0200

    meson: Fix -Dstartup_notification=enabled/disabled
    
    'enabled' made the dependency required but did not set
    HAVE_STARTUP_NOTIFICATION. 'disabled' behaved the same as 'auto'.
    
    We are not allowed to compare booleans and feature option values, so
    just add everything to the configuration.
    
    Fixes https://gitlab.gnome.org/GNOME/libwnck/issues/139

 meson.build | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/meson.build b/meson.build
index 6e35c00..28799d8 100644
--- a/meson.build
+++ b/meson.build
@@ -43,7 +43,7 @@ pkg_deps = [
   {'name': 'glib-2.0', 'version': '>= 2.32' },
   {'name': 'gobject-2.0', 'version': '>= 2.13.0' },
   {'name': 'gtk+-3.0', 'version': '>= 3.22.0' },
-  {'name': STARTUP_NOTIFICATION_PACKAGE, 'version': '>= 0.4', 'required': 
get_option('startup_notification').enabled() },
+  {'name': STARTUP_NOTIFICATION_PACKAGE, 'version': '>= 0.4', 'required': 
get_option('startup_notification')},
   {'name': X11_PACKAGE },
   {'name': XRES_PACKAGE, 'required': false},
 ]
@@ -54,7 +54,7 @@ foreach p: pkg_deps
   dep = dependency(pkg, version: p.get('version', []), required: required)
   LIBWNCK_DEPS += dep
 
-  if not required and dep.found()
+  if dep.found()
     conf.set('HAVE_' + pkg.to_upper().underscorify(), 1)
   endif
 endforeach