[mojo-edk] Minor clean-up in the ports layer

mojo/edk/system/ports/node.cc

Index: mojo/edk/system/ports/node.cc
diff --git a/mojo/edk/system/ports/node.cc b/mojo/edk/system/ports/node.cc
index 1718306fc672bab1f7e0660fd10fcaa732cbb0c1..1030016093107ae95ab58b0d8694830cbdb653bd 100644
--- a/mojo/edk/system/ports/node.cc
+++ b/mojo/edk/system/ports/node.cc
@@ -791,6 +791,9 @@ void Node::WillSendPort_Locked(Port* port,
   port_descriptor->last_sequence_num_to_receive =
       port->last_sequence_num_to_receive;
   port_descriptor->peer_closed = port->peer_closed;
+  port_descriptor->padding0 = 0;
+  port_descriptor->padding1 = 0;
+  port_descriptor->padding2 = 0;
 
   // Configure the local port to point to the new port.
   port->peer_node_name = to_node_name;