[CORD-197] Properly handles a flow with empty instruction

Change-Id: Ia465fdc8df1dca7a46249cd4cd8d41faf8461c3a
diff --git a/providers/openflow/flow/src/main/java/org/onosproject/provider/of/flow/impl/FlowModBuilderVer13.java b/providers/openflow/flow/src/main/java/org/onosproject/provider/of/flow/impl/FlowModBuilderVer13.java
index 0a53a2d..cc26575 100644
--- a/providers/openflow/flow/src/main/java/org/onosproject/provider/of/flow/impl/FlowModBuilderVer13.java
+++ b/providers/openflow/flow/src/main/java/org/onosproject/provider/of/flow/impl/FlowModBuilderVer13.java
@@ -215,6 +215,7 @@
         for (Instruction i : treatments) {
             switch (i.type()) {
                 case DROP:
+                case NOACTION:
                     return Collections.emptyList();
                 case L0MODIFICATION:
                     actions.add(buildL0Modification(i));