[rhythmbox/wip/hadess/dbus-service-exec-line] data: Fix executable path in D-Bus service definition

[Bastien Nocera <hadess src gnome org>]

commit b5489ded82a4b209234b84f4252c31e58f2c2527
Author: Bastien Nocera <hadess hadess net>
Date:   Tue May 3 10:23:47 2022 +0200

    data: Fix executable path in D-Bus service definition
    
    Fix bin directory being relative to the prefix rather than absolute:
    WARNING: Binary not found for Exec line in 
/home/hadess/Projects/Flathub/org.gnome.Rhythmbox3/_build/export/share/dbus-1/services/org.gnome.Rhythmbox3.service:
 bin/rhythmbox

 data/meson.build | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/data/meson.build b/data/meson.build
index b75fc2616..483513c43 100644
--- a/data/meson.build
+++ b/data/meson.build
@@ -20,7 +20,7 @@ foreach desktop_file : desktop_files
 endforeach
 
 service_conf = configuration_data()
-service_conf.set('bindir', get_option('bindir'))
+service_conf.set('bindir', get_option('prefix') / get_option('bindir'))
 
 service = 'org.gnome.Rhythmbox3.service'