[gimp/gimp-2-10] plug-ins: fix wrong layer offset of psp layers.

[Jehan <jehanp src gnome org>]

commit cebd634ec185eb6f9316a70412583f43a3499255
Author: Jacob Boerema <jgboerema gmail com>
Date:   Fri Aug 21 19:35:15 2020 -0400

    plug-ins: fix wrong layer offset of psp layers.
    
    (cherry picked from commit dc80c78a26bec85bcb2efd4e32dbf6c35e711f2c)

 plug-ins/common/file-psp.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/plug-ins/common/file-psp.c b/plug-ins/common/file-psp.c
index 11b37494eb..0e6d4ef4bb 100644
--- a/plug-ins/common/file-psp.c
+++ b/plug-ins/common/file-psp.c
@@ -1496,7 +1496,7 @@ read_layer_block (FILE      *f,
          name,
          image_rect[2] - image_rect[0], image_rect[3] - image_rect[1],
          width, height,
-         saved_image_rect[0], saved_image_rect[1],
+         image_rect[0]+saved_image_rect[0], image_rect[1]+saved_image_rect[1],
          opacity, blend_mode_name (blend_mode),
          bitmap_count, channel_count);
 
@@ -1546,9 +1546,9 @@ read_layer_block (FILE      *f,
 
       gimp_image_insert_layer (image_ID, layer_ID, -1, -1);
 
-      if (saved_image_rect[0] != 0 || saved_image_rect[1] != 0)
+      if (image_rect[0] != 0 || image_rect[1] != 0 || saved_image_rect[0] != 0 || saved_image_rect[1] != 0)
         gimp_layer_set_offsets (layer_ID,
-                                saved_image_rect[0], saved_image_rect[1]);
+                                image_rect[0] + saved_image_rect[0], image_rect[1] + saved_image_rect[1]);
 
       if (!visibility)
         gimp_item_set_visible (layer_ID, FALSE);