meson: fix condition for installation of .in units, 99-default.link

The condition to install in_units was calculated, but not used.

99-default.link should be installed uncoditionally.

network/meson.build

@@ -4,9 +4,11 @@ if conf.get('ENABLE_NETWORKD', 0) == 1
   install_data('80-container-host0.network',
                '80-container-ve.network',
                '80-container-vz.network',
-               '99-default.link',
                install_dir : networkdir)
 
   meson.add_install_script('sh', '-c',
                            mkdir_p.format(join_paths(sysconfdir, 'systemd/network')))
 endif
+
+install_data('99-default.link',
+             install_dir : networkdir)

units/meson.build

@@ -255,7 +255,7 @@ foreach tuple : in_units
     output : file,
     command : [sed, '/^## /d', '@INPUT@'],
     capture : true,
-    install : true,
+    install : install,
     install_dir : systemunitdir)
 
   if install and tuple.length() > 2