[gimp] Issue #4919: PDF: Order of pages reversed when opening and closing.

[Jehan <jehanp src gnome org>]

commit 809e79f37a8825f799a0affad028c6bba3264d0d
Author: Jehan <jehan girinstud io>
Date:   Wed Apr 8 20:08:00 2020 +0200

    Issue #4919: PDF: Order of pages reversed when opening and closing.
    
    Let's go with the logics "bottom layer is first", which is also the
    logics in animated formats. Hence changing the layer order on loading
    multi-page PDF.

 plug-ins/common/file-pdf-load.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/plug-ins/common/file-pdf-load.c b/plug-ins/common/file-pdf-load.c
index 771f633597..531f5e1699 100644
--- a/plug-ins/common/file-pdf-load.c
+++ b/plug-ins/common/file-pdf-load.c
@@ -855,7 +855,7 @@ load_image (PopplerDocument        *doc,
 
       surface = render_page_to_surface (page, width, height, scale, antialias);
 
-      layer_from_surface (image, page_label, i, surface,
+      layer_from_surface (image, page_label, 0, surface,
                           doc_progress, 1.0 / pages->n_pages);
 
       g_free (page_label);