Bugfix: OrdinalIterators for hashed sets retrieved directly from NFCo…

…mpressedGraph were sized incorrectly

src/main/java/com/netflix/nfgraph/compressed/NFCompressedGraph.java

@@ -155,7 +155,7 @@ private OrdinalIterator iterator(String nodeType, ByteArrayReader reader, NFProp
             return EMPTY_ITERATOR;
 
         if(propertySpec.isHashed()) {
-            reader.setRemainingBytes(1 << size);
+            reader.setRemainingBytes(1 << (size - 1));
             return new HashSetOrdinalIterator(reader);
         }