XWPF: dispose xml cursor when iteration over it is done

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1035615 13f79535-47bb-0310-9956-ffa450edef68

src/ooxml/java/org/apache/poi/xwpf/usermodel/XWPFDocument.java

@@ -155,6 +155,7 @@ public class XWPFDocument extends POIXMLDocument implements Document, IBody {
                 	tables.add(t);
                 }
             }
+            cursor.dispose();
 			
             // Sort out headers and footers
 			if (doc.getDocument().getBody().getSectPr() != null)

src/ooxml/java/org/apache/poi/xwpf/usermodel/XWPFParagraph.java

@@ -140,6 +140,7 @@ public class XWPFParagraph implements IBodyElement{
                    footnoteText.append("]");
                 }
              }
+             c.dispose();
           }
       }
     }