[gegl] operation: only do in-place processing if ROI fits in input abyss

[Ell <ell src gnome org>]

commit dd642566fda190ec7ab2bd6235599beb3cea41ce
Author: Ell <ell_se yahoo com>
Date:   Thu Jan 16 17:22:55 2020 +0200

    operation: only do in-place processing if ROI fits in input abyss
    
    In gegl_can_do_inplace_processing(), check if the ROI fits in the
    input buffer's abyss, rather than its extent, since we're
    discarding written data outside the abyss.

 gegl/operation/gegl-operations.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/gegl/operation/gegl-operations.c b/gegl/operation/gegl-operations.c
index 07c12d073..e52ab38e9 100644
--- a/gegl/operation/gegl-operations.c
+++ b/gegl/operation/gegl-operations.c
@@ -398,7 +398,7 @@ gegl_can_do_inplace_processing (GeglOperation       *operation,
     return FALSE;
 
   if (gegl_buffer_get_format (input) == gegl_operation_get_format (operation, "output") &&
-      gegl_rectangle_contains (gegl_buffer_get_extent (input), result))
+      gegl_rectangle_contains (gegl_buffer_get_abyss (input), result))
     return TRUE;
   return FALSE;
 }