gluon-core: more coding style fixes

package/gluon-core/luasrc/lib/gluon/upgrade/030-system

@@ -5,14 +5,14 @@ local sysconfig = require 'gluon.sysconfig'
 
 -- Initial
 if not sysconfig.gluon_version then
-  local site = require 'gluon.site_config'
-  local util = require 'gluon.util'
-  local uci = require('simple-uci').cursor()
+	local site = require 'gluon.site_config'
+	local util = require 'gluon.util'
+	local uci = require('simple-uci').cursor()
 
-  local system = uci:get_first('system', 'system')
+	local system = uci:get_first('system', 'system')
 
-  pretty_hostname.set(uci, (site.hostname_prefix or '') .. util.node_id())
-  uci:set('system', system, 'timezone', site.timezone)
+	pretty_hostname.set(uci, (site.hostname_prefix or '') .. util.node_id())
+	uci:set('system', system, 'timezone', site.timezone)
 
-  uci:save('system')
+	uci:save('system')
 end