重构 - 清理代码

src/main/java/org/b3log/solo/model/sitemap/Sitemap.java

@@ -38,7 +38,7 @@ public final class Sitemap {
     /**
      * Start document.
      */
-    private static final String START_DOCUMENT = "<?xml version='1.0' encoding='UTF-8'?>";
+    private static final String START_DOCUMENT = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>";
 
     /**
      * Start URL set element.
@@ -53,7 +53,7 @@ public final class Sitemap {
     /**
      * URLs.
      */
-    private List<URL> urls = new ArrayList<URL>();
+    private List<URL> urls = new ArrayList<>();
 
     /**
      * Adds the specified url.

src/main/java/org/b3log/solo/processor/PageProcessor.java

@@ -118,8 +118,6 @@ public class PageProcessor {
 
             Skins.fillLangs(preference.getString(Option.ID_C_LOCALE_STRING), (String) request.getAttribute(Keys.TEMAPLTE_DIR_NAME), dataModel);
 
-            final Map<String, String> langs = langPropsService.getAll(Latkes.getLocale());
-
             // See PermalinkFilter#dispatchToArticleOrPageProcessor()
             final JSONObject page = (JSONObject) request.getAttribute(Page.PAGE);