[mutter] build: Also build mutter-restart-helper executable

[Jonas Ådahl <jadahl src gnome org>]

commit 7c774ab53eb28ad0f4b41edb397ebb715b3521c0
Author: Jonas Ådahl <jadahl gmail com>
Date:   Wed Nov 7 12:28:57 2018 +0100

    build: Also build mutter-restart-helper executable
    
    Was left out by mistake. Lets add it.

 src/meson.build | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
---
diff --git a/src/meson.build b/src/meson.build
index 9925a949b..4f34ed1ff 100644
--- a/src/meson.build
+++ b/src/meson.build
@@ -753,6 +753,22 @@ executable('mutter',
   install: true,
 )
 
+executable('mutter-restart-helper',
+  sources: [
+    files('core/restart-helper.c'),
+  ],
+  include_directories: [
+    top_includepath,
+  ],
+  c_args: mutter_c_args,
+  dependencies: [
+    x11_dep,
+    xcomposite_dep,
+  ],
+  install_dir: libexecdir,
+  install: true,
+)
+
 if have_introspection
   mutter_introspected_sources = []
   foreach source : mutter_sources