[four-in-a-row] Fix previous commit.

[Arnaud B. <arnaudb src gnome org>]

commit 2fa84bd4673190154a0294cf2bad1cf2c49a6473
Author: Arnaud Bonatti <arnaud bonatti gmail com>
Date:   Sat Oct 26 17:59:38 2019 +0200

    Fix previous commit.

 meson.build | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/meson.build b/meson.build
index 1bb24c2..cb03e1c 100644
--- a/meson.build
+++ b/meson.build
@@ -2,6 +2,8 @@ project('four-in-a-row', 'c', 'vala',
     version: '3.34.0'
 )
 
+project_id = 'org.gnome.Four-in-a-row'
+
 add_global_arguments('-DGETTEXT_PACKAGE="@0@"'.format (meson.project_name()), language: 'c')
 
 # used to install help