Allow duplex connections' dispose() methods to throw IOExceptions.

api/net/sf/briar/api/plugins/duplex/DuplexTransportConnection.java

@@ -28,5 +28,5 @@ public interface DuplexTransportConnection {
 	 * of an exception and the second argument indicates whether the connection
 	 * was recognised, which may affect how resources are disposed of.
 	 */
-	void dispose(boolean exception, boolean recognised);
+	void dispose(boolean exception, boolean recognised) throws IOException;
 }

api/net/sf/briar/api/plugins/simplex/SimplexTransportReader.java

@@ -18,7 +18,6 @@ public interface SimplexTransportReader {
 	 * argument indicates whether the reader is being closed because of an
 	 * exception and the second argument indicates whether the connection was
 	 * recognised, which may affect how resources are disposed of.
-	 * @throws IOException 
 	 */
 	void dispose(boolean exception, boolean recognised) throws IOException;
 }

api/net/sf/briar/api/plugins/simplex/SimplexTransportWriter.java

@@ -25,7 +25,6 @@ public interface SimplexTransportWriter {
 	 * Closes the writer and disposes of any associated resources. The
 	 * argument indicates whether the writer is being closed because of an
 	 * exception, which may affect how resources are disposed of.
-	 * @throws IOException 
 	 */
 	void dispose(boolean exception) throws IOException;
 }