meson.build: change set10 to set

Follow-up to cfec80582e ("meson.build: change from config.set10() and #if to config.set() and #ifdef")
which was parallel to 9e37bc0cfa and the latter didn't get updated.

Fixes: 9e37bc0cfa ("plugins: add support for lua plugins to change evdev event streams")
Part-of: <https://gitlab.freedesktop.org/libinput/libinput/-/merge_requests/1347>

meson.build

@@ -171,10 +171,14 @@ dep_rt = cc.find_library('rt', required : false)
 dep_lua = dependency(get_option('lua-interpreter'),
 		     required : get_option('lua-plugins'))
 have_lua = dep_lua.found()
-config_h.set10('HAVE_LUA', have_lua)
+if have_lua
+	config_h.set('HAVE_LUA', 1)
+endif
 
 have_plugins =  dep_lua.found()
-config_h.set10('HAVE_PLUGINS', have_plugins)
+if have_plugins
+	config_h.set('HAVE_PLUGINS', 1)
+endif
 
 summary({
 	'Plugins enabled' : have_plugins,

src/libinput-plugin.c

@@ -382,7 +382,7 @@ libinput_plugin_system_load_plugins(struct libinput *libinput,
 		return 0;
 	}
 
-#if HAVE_LUA
+#ifdef HAVE_LUA
 	_autostrvfree_ char **directories = steal(&libinput->plugin_system.directories);
 	size_t nfiles = 0;
 	_autostrvfree_ char **plugin_files =
@@ -400,10 +400,10 @@ libinput_plugin_system_load_plugins(struct libinput *libinput,
 
 	libinput_plugin_system_run(&libinput->plugin_system);
 
-#if !HAVE_PLUGINS
-	return -ENOSYS;
-#else
+#ifdef HAVE_PLUGINS
 	return 0;
+#else
+	return -ENOSYS;
 #endif
 }