Cosmetics

Change-Id: I46c79068f9de3451483b63e8963143ab283cf53b
diff --git a/core/store/dist/src/main/java/org/onosproject/store/resource/impl/UnifiedDiscreteResources.java b/core/store/dist/src/main/java/org/onosproject/store/resource/impl/UnifiedDiscreteResources.java
index ceb115d..31c6488 100644
--- a/core/store/dist/src/main/java/org/onosproject/store/resource/impl/UnifiedDiscreteResources.java
+++ b/core/store/dist/src/main/java/org/onosproject/store/resource/impl/UnifiedDiscreteResources.java
@@ -65,7 +65,7 @@
 
     @Override
     public DiscreteResources difference(DiscreteResources other) {
-        return of(Sets.difference(values(), other.values()));
+        return of(Sets.difference(this.values(), other.values()));
     }
 
     @Override