Changes to support ofp_error_message with xid

Change-Id: Ic6f66628b1da43785564939db6968fb01e12654e
diff --git a/protoset.go b/protoset.go
index 2ab256d..0b626ac 100644
--- a/protoset.go
+++ b/protoset.go
@@ -19,4 +19,4 @@
  * to vendor the voltha.pb file.
  */
 
-package volthaGoProtoSet;
+package volthaGoProtoSet