meson: drop indent level from xwayland

Use the pattern to avoid identing everything, when everything in the
file is under the one conditional.

Helps readability.

Signed-off-by: Pekka Paalanen <pq@iki.fi>

xwayland/meson.build

@@ -1,12 +1,15 @@
-if get_option('xwayland')
-	srcs_xwayland = [
+if not get_option('xwayland')
+	subdir_done()
+endif
+
+srcs_xwayland = [
 	'launcher.c',
 	'window-manager.c',
 	'selection.c',
 	'dnd.c',
 	'hash.c',
-	]
-	deps_xwayland = [
+]
+deps_xwayland = [
 	dependency('xcb'),
 	dependency('xcb-composite'),
 	dependency('xcb-shape'),
@@ -14,8 +17,8 @@ if get_option('xwayland')
 	dependency('xcursor'),
 	dependency('cairo-xcb'),
 	dep_libweston,
-	]
-	plugin_xwayland = shared_library(
+]
+plugin_xwayland = shared_library(
 	'xwayland',
 	srcs_xwayland,
 	link_with: lib_cairo_shared,
@@ -24,8 +27,7 @@ if get_option('xwayland')
 	name_prefix: '',
 	install: true,
 	install_dir: dir_module_libweston
-	)
-	env_modmap += 'xwayland.so=@0@;'.format(plugin_xwayland.full_path())
+)
+env_modmap += 'xwayland.so=@0@;'.format(plugin_xwayland.full_path())
 
-	install_headers('xwayland-api.h', subdir: dir_include_libweston)
-endif
+install_headers('xwayland-api.h', subdir: dir_include_libweston)