clean up parser data

source/net/yacy/document/Document.java

@@ -821,6 +821,17 @@ dc_rights
             ContentScraper.addAllImages(images, doc.getImages());
             if (doc.lon() != 0.0f && doc.lat() != 0.0f) { lon = doc.lon(); lat = doc.lat(); }
         }
+
+        // clean up parser data
+        for (final Document doc: docs) {
+            Object parserObject = doc.getParserObject();
+            if (parserObject instanceof ContentScraper) {
+                final ContentScraper html = (ContentScraper) parserObject;
+                html.close();
+            }
+        }
+
+        // return consolidation
         return new Document(
                 location,
                 globalMime,

source/net/yacy/document/parser/html/ContentScraper.java

@@ -864,9 +864,18 @@ public class ContentScraper extends AbstractScraper implements Scraper {
         // free resources
         super.close();
         this.anchors.clear();
+        this.rss.clear();
+        this.css.clear();
+        this.script.clear();
+        this.frames.clear();
+        this.iframes.clear();
+        this.embeds.clear();
         this.images.clear();
+        this.metas.clear();
         this.title = null;
         this.headlines = null;
+        this.bold.clear();
+        this.italic.clear();
         this.content.clear();
         this.root = null;
     }

source/net/yacy/document/parser/htmlParser.java

@@ -143,7 +143,6 @@ public class htmlParser extends AbstractParser implements Parser {
                 scraper.getRSS(),
                 scraper.getImages(),
                 scraper.indexingDenied());
-        //scraper.close();
         ppd.setFavicon(scraper.getFavicon());
 
         return ppd;