follow grow volume option version

weed/server/master_server_handlers_admin.go

@@ -167,6 +167,7 @@ func (ms *MasterServer) getVolumeGrowOption(r *http.Request) (*topology.VolumeGr
 			return nil, fmt.Errorf("Failed to parse int64 preallocate = %s: %v", r.FormValue("preallocate"), err)
 		}
 	}
+	ver := needle.GetCurrentVersion()
 	volumeGrowOption := &topology.VolumeGrowOption{
 		Collection:         r.FormValue("collection"),
 		ReplicaPlacement:   replicaPlacement,
@@ -177,7 +178,7 @@ func (ms *MasterServer) getVolumeGrowOption(r *http.Request) (*topology.VolumeGr
 		Rack:               r.FormValue("rack"),
 		DataNode:           r.FormValue("dataNode"),
 		MemoryMapMaxSizeMb: memoryMapMaxSizeMb,
-		Version:            uint32(needle.GetCurrentVersion()),
+		Version:            uint32(ver),
 	}
 	return volumeGrowOption, nil
 }