[gimp] app: don't push move and remove undo steps for custom guides

[Michael Natterer <mitch src gnome org>]

commit 0e050bed7c10b8cef5bcb348ff9ca97245d72f1b
Author: Michael Natterer <mitch gimp org>
Date:   Sun Apr 3 20:31:56 2016 +0200

    app: don't push move and remove undo steps for custom guides

 app/core/gimpimage-guides.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)
---
diff --git a/app/core/gimpimage-guides.c b/app/core/gimpimage-guides.c
index 4eafcb3..f698f04 100644
--- a/app/core/gimpimage-guides.c
+++ b/app/core/gimpimage-guides.c
@@ -114,6 +114,9 @@ gimp_image_remove_guide (GimpImage *image,
 
   private = GIMP_IMAGE_GET_PRIVATE (image);
 
+  if (gimp_guide_is_custom (guide))
+    push_undo = FALSE;
+
   if (push_undo)
     gimp_image_undo_push_guide (image, C_("undo-type", "Remove Guide"), guide);
 
@@ -141,6 +144,9 @@ gimp_image_move_guide (GimpImage *image,
   else
     g_return_if_fail (position <= gimp_image_get_width (image));
 
+  if (gimp_guide_is_custom (guide))
+    push_undo = FALSE;
+
   if (push_undo)
     gimp_image_undo_push_guide (image, C_("undo-type", "Move Guide"), guide);