Sitemap: switch off pretty-printing to fix some whitespace problems

git-svn-id: https://svn.apache.org/repos/asf/maven/maven-1/plugins/trunk@328722 13f79535-47bb-0310-9956-ffa450edef68

xdoc/src/plugin-resources/sitemap.jsl

@@ -81,10 +81,11 @@
       <util:available file="${maven.docs.src}/${xml_link}">
         <util:file var="xmlfile" name="${maven.docs.src}/${xml_link}"/>
         <x:parse var="inputdoc" xml="${xmlfile}"/>
-        <x:set
-          var="description"
-          select="$inputdoc//meta[@name = 'description']/@content"
-          asString="true"/>
+        <x:if select="$inputdoc//meta[@name = 'description']/@content">
+          <j:set var="description">
+            [<x:expr select="string($inputdoc//meta[@name = 'description']/@content)"/>]
+          </j:set>
+        </x:if>
       </util:available>
       <j:set var="collapse"><x:expr select="@collapse"/></j:set>
       <j:choose>