fix pdfParser not closed warning from pdfbox

for encrypted pdf on exit due to missing permission to extract

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

@@ -107,8 +107,10 @@ public class pdfParser extends AbstractParser implements Parser {
                 throw new Parser.Failure("Document is encrypted (3): " + e.getMessage(), location);
             }
             final AccessPermission perm = pdfDoc.getCurrentAccessPermission();
-            if (perm == null || !perm.canExtractContent())
+            if (perm == null || !perm.canExtractContent()) {
+                try {pdfDoc.close();} catch (final IOException ee) {}
                 throw new Parser.Failure("Document is encrypted and cannot be decrypted", location);
+            }
         }
 
         // extracting some metadata
@@ -131,16 +133,16 @@ public class pdfParser extends AbstractParser implements Parser {
         if (docTitle == null || docTitle.isEmpty()) {
             docTitle = MultiProtocolURL.unescape(location.getFileName());
         }
-        final CharBuffer writer = new CharBuffer(odtParser.MAX_DOCSIZE);
-        byte[] contentBytes = new byte[0];
+        final CharBuffer writer = new CharBuffer(odtParser.MAX_DOCSIZE);
+        byte[] contentBytes = new byte[0];
         try {
             // create a writer for output
-            final PDFTextStripper  stripper = new PDFTextStripper();
+            final PDFTextStripper  stripper = new PDFTextStripper();
 
             stripper.setEndPage(3); // get first 3 pages (always)
             writer.append(stripper.getText(pdfDoc));
             contentBytes = writer.getBytes(); // remember text in case of interrupting thread
-
+
             stripper.setStartPage(4); // continue with page 4 (terminated, resulting in no text)
             stripper.setEndPage(Integer.MAX_VALUE); // set to default
             // we start the pdf parsing in a separate thread to ensure that it can be terminated
@@ -149,14 +151,14 @@ public class pdfParser extends AbstractParser implements Parser {
                 @Override
                 public void run() {
                     Thread.currentThread().setName("pdfParser.getText:" + location);
-                    try {
-                        writer.append(stripper.getText(pdfDocC));
+                    try {
+                        writer.append(stripper.getText(pdfDocC));
                     } catch (final Throwable e) {}
                 }
             };
             t.start();
             t.join(3000);
-            if (t.isAlive()) t.interrupt();
+            if (t.isAlive()) t.interrupt();
             pdfDoc.close();
             contentBytes = writer.getBytes(); // get final text before closing writer
         } catch (final Throwable e) {
@@ -176,7 +178,7 @@ public class pdfParser extends AbstractParser implements Parser {
         if (docTitle == null) {
             docTitle = docSubject;
         }
-
+
         // clear resources in pdfbox. they say that is resolved but it's not. see:
         // https://issues.apache.org/jira/browse/PDFBOX-313
         // https://issues.apache.org/jira/browse/PDFBOX-351