[JENA-1927] Add missing import
diff --git a/jena-tdb/src/main/java/org/apache/jena/tdb/base/objectfile/ObjectFileStorage.java b/jena-tdb/src/main/java/org/apache/jena/tdb/base/objectfile/ObjectFileStorage.java
index 1c5974b..46969a6 100644
--- a/jena-tdb/src/main/java/org/apache/jena/tdb/base/objectfile/ObjectFileStorage.java
+++ b/jena-tdb/src/main/java/org/apache/jena/tdb/base/objectfile/ObjectFileStorage.java
@@ -27,6 +27,7 @@
 import org.apache.jena.atlas.iterator.Iter;
 import org.apache.jena.atlas.iterator.IteratorSlotted;
 import org.apache.jena.atlas.lib.Pair;
+import org.apache.jena.tdb.TDB;
 import org.apache.jena.tdb.base.file.BufferChannel;
 import org.apache.jena.tdb.base.file.FileException;
 import org.apache.jena.tdb.sys.SystemTDB;