[gimp] Fix a comment

[Michael Natterer <mitch src gnome org>]

commit a16bfe749fd2a3dd5305dd89bfcd0189cef0fb71
Author: Michael Natterer <mitch gimp org>
Date:   Wed Aug 19 21:28:16 2009 +0200

    Fix a comment

 app/widgets/gimplayertreeview.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/app/widgets/gimplayertreeview.c b/app/widgets/gimplayertreeview.c
index 028b768..784ce20 100644
--- a/app/widgets/gimplayertreeview.c
+++ b/app/widgets/gimplayertreeview.c
@@ -964,7 +964,7 @@ gimp_layer_tree_view_lock_alpha_button_toggled (GtkWidget         *widget,
           GimpUndo *undo;
           gboolean  push_undo = TRUE;
 
-          /*  compress opacity undos  */
+          /*  compress lock alpha undos  */
           undo = gimp_image_undo_can_compress (image, GIMP_TYPE_ITEM_UNDO,
                                                GIMP_UNDO_LAYER_LOCK_ALPHA);