In fabric.p4 do not parse int_data if sink is not enabled

Change-Id: Ie4d5b9ccdf31ea1142945365fca7db7b8d4ae3f9
diff --git a/pipelines/fabric/src/main/resources/include/parser.p4 b/pipelines/fabric/src/main/resources/include/parser.p4
index 3f77df9..6aef63b 100644
--- a/pipelines/fabric/src/main/resources/include/parser.p4
+++ b/pipelines/fabric/src/main/resources/include/parser.p4
@@ -263,7 +263,9 @@
         packet.emit(hdr.int_q_congestion);
         packet.emit(hdr.int_egress_tx_util);
 #endif // WITH_INT_TRANSIT
+#ifdef WITH_INT_SINK
         packet.emit(hdr.int_data);
+#endif // WITH_INT_SINK
         packet.emit(hdr.intl4_tail);
 #endif // WITH_INT
     }