gfio: make completion percentiles graphs 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 aaecad6..c4be172 100644
--- a/gclient.c
+++ b/gclient.c
@@ -1153,7 +1153,7 @@
 	gtk_box_pack_start(GTK_BOX(mbox), box, TRUE, FALSE, 3);
 
 	frame = gtk_frame_new(ddir_label[ddir]);
-	gtk_box_pack_start(GTK_BOX(box), frame, FALSE, FALSE, 5);
+	gtk_box_pack_start(GTK_BOX(box), frame, TRUE, TRUE, 5);
 
 	main_vbox = gtk_vbox_new(FALSE, 3);
 	gtk_container_add(GTK_CONTAINER(frame), main_vbox);