Avoid double wrap of IndexedLambda

Change-Id: I2acaa255529949e8443542904df465e6b0fbb72a
diff --git a/core/common/src/test/java/org/onosproject/codec/impl/IntentJsonMatcher.java b/core/common/src/test/java/org/onosproject/codec/impl/IntentJsonMatcher.java
index 3adfcff..acc1f0e 100644
--- a/core/common/src/test/java/org/onosproject/codec/impl/IntentJsonMatcher.java
+++ b/core/common/src/test/java/org/onosproject/codec/impl/IntentJsonMatcher.java
@@ -157,7 +157,7 @@
         final JsonNode lambdaJson = constraintJson.get("lambda");
         return lambdaJson != null
                 && constraintJson.get("lambda").asInt()
-                == lambdaConstraint.lambda().toInt();
+                == lambdaConstraint.lambda().index();
     }
 
     /**