Make ObjectUploadListener public

Change-Id: I5b0fb1220bc0e5c660f1b5373abc5868d985c60b
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>

org.eclipse.jgit.lfs.server/src/org/eclipse/jgit/lfs/server/fs/ObjectUploadListener.java

 import org.eclipse.jgit.lfs.lib.Constants;
 
 /**
- * Handle asynchronous object upload
+ * Handle asynchronous object upload.
+ *
+ * @since 4.6
  */
-class ObjectUploadListener implements ReadListener {
+public class ObjectUploadListener implements ReadListener {
 
 	private static Logger LOG = Logger
 			.getLogger(ObjectUploadListener.class.getName());
 		close();
 	}
 
+	/**
+	 * @throws IOException
+	 */
 	protected void close() throws IOException {
 		try {
 			inChannel.close();
 			LOG.log(Level.SEVERE, ex.getMessage(), ex);
 		}
 	}
-}
+}