Reduced graph handles and thread locals
diff --git a/src/main/java/net/floodlightcontroller/devicemanager/internal/DeviceStorageImpl.java b/src/main/java/net/floodlightcontroller/devicemanager/internal/DeviceStorageImpl.java
index 64c12dc..e964b8e 100644
--- a/src/main/java/net/floodlightcontroller/devicemanager/internal/DeviceStorageImpl.java
+++ b/src/main/java/net/floodlightcontroller/devicemanager/internal/DeviceStorageImpl.java
@@ -26,7 +26,7 @@
 		conn = GraphDBConnection.getInstance(conf);
 	}	
 
-	public void finalize() {
+	public void finalize() {		
 		close();
 	}