gfio: make io depths expand to window width

Signed-off-by: Stephen M. Cameron <stephenmcameron@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/gclient.c b/gclient.c
index 45d6100..7eb3eb2 100644
--- a/gclient.c
+++ b/gclient.c
@@ -763,7 +763,7 @@
 	gfio_add_sc_depths_tree(model, ts, nr_labels, 1);
 	gfio_add_sc_depths_tree(model, ts, nr_labels, 0);
 
-	gtk_box_pack_start(GTK_BOX(box), tree_view, TRUE, FALSE, 3);
+	gtk_box_pack_start(GTK_BOX(box), tree_view, TRUE, TRUE, 3);
 }
 
 static void gfio_show_cpu_usage(GtkWidget *vbox, struct thread_stat *ts)