simplify description

Author: vladak

opengrok-web/src/main/java/org/opengrok/web/PageConfig.java

@@ -66,6 +66,7 @@
 import jakarta.servlet.http.HttpServletRequest;
 import jakarta.servlet.http.HttpServletResponse;
 import jakarta.ws.rs.core.HttpHeaders;
+import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 import org.jetbrains.annotations.VisibleForTesting;
 import org.opengrok.indexer.Info;
@@ -691,6 +692,7 @@ public EftarFileReader getEftarReader() {
      *
      * @return an empty string if not found, the tag otherwise.
      */
+    @NotNull
     public String getDefineTagsIndex() {
         if (dtag != null) {
             return dtag;

opengrok-web/src/main/webapp/rss.jsp

@@ -50,7 +50,6 @@ org.opengrok.web.PageConfig"
         return;
     }
     String path = cfg.getPath();
-    String dtag = cfg.getDefineTagsIndex();
     response.setContentType("text/xml");
 %><?xml version="1.0"?>
 <?xml-stylesheet type="text/xsl" href="<%= request.getContextPath()
@@ -60,7 +59,7 @@ org.opengrok.web.PageConfig"
     <title>Changes in <%= path.isEmpty()
         ? "Cross Reference"
         : Util.htmlize(cfg.getResourceFile().getName()) %></title>
-    <description><%= Util.htmlize(dtag) %></description>
+    <description><%= Util.htmlize(cfg.getDefineTagsIndex()) %></description>
     <language>en</language>
     <copyright>Copyright 2025</copyright>
     <generator>Java</generator><%