[gimp] Issue #1627 - Non-existing item ID error when loading multiple-image HEIFs

[Michael Natterer <mitch src gnome org>]

commit 1dee517bc98e3a227cb9cb5a44d3913ce48ba4f5
Author: Michael Natterer <mitch gimp org>
Date:   Tue Jun 12 12:54:34 2018 +0200

    Issue #1627 - Non-existing item ID error when loading multiple-image HEIFs
    
    Accidentially killed a line when importing the plug-in.

 plug-ins/common/file-heif.c | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/plug-ins/common/file-heif.c b/plug-ins/common/file-heif.c
index 5daf9127ed..73124542a6 100644
--- a/plug-ins/common/file-heif.c
+++ b/plug-ins/common/file-heif.c
@@ -762,6 +762,7 @@ load_thumbnails (struct heif_context *heif,
       gint                      thumbnail_width;
       gint                      thumbnail_height;
 
+      images[i].ID         = IDs[i];
       images[i].caption[0] = 0;
       images[i].thumbnail  = NULL;