temp, testing Ken's varint code

Author: hmottestad

core/sail/lmdb/src/main/java/org/eclipse/rdf4j/sail/lmdb/ValueStore.java

@@ -1612,7 +1612,7 @@ private LmdbIRI data2uri(long id, byte[] data, LmdbIRI value) throws IOException
 		ByteBuffer bb = ByteBuffer.wrap(data);
 		// skip type marker
 		bb.get();
-		long nsID = Varint.readUnsignedHeap(bb);
+		long nsID = Varint.readUnsigned(bb);
 		String namespace = getNamespace(nsID);
 		String localName = new String(data, bb.position(), bb.remaining(), StandardCharsets.UTF_8);
 
@@ -1639,7 +1639,7 @@ private LmdbLiteral data2literal(long id, byte[] data, LmdbLiteral value) throws
 		// skip type marker
 		bb.get();
 		// Get datatype
-		long datatypeID = Varint.readUnsignedHeap(bb);
+		long datatypeID = Varint.readUnsigned(bb);
 		IRI datatype = null;
 		if (datatypeID != LmdbValue.UNKNOWN_ID) {
 			datatype = (IRI) getValue(datatypeID);