Add missing close() calls to use of TableRowIterator, also add close() to ItemIterator (to close underlying TableRowIterator)

git-svn-id: http://scm.dspace.org/svn/repo/branches/dspace-1_5_x@3038 9c30dcfa-912a-0410-8fc2-9e0234be79fd

dspace-api/src/main/java/org/dspace/content/Collection.java

@@ -1092,6 +1092,11 @@ public class Collection extends DSpaceObject
         	log.error("caught exception: ", e);
         	throw new IOException(e.getMessage());
         }
+        finally
+        {
+            if (items != null)
+                items.close();
+        }
 
         // Delete bitstream logo
         setLogo(null);