[shotwell] viewer: Don't always add photo again after saving

[Jens Georg <jensgeorg src gnome org>]

commit 83aa3870cae8d958a253630c988a1f4a48dd5783
Author: Jens Georg <mail jensge org>
Date:   Sat Mar 4 00:05:43 2017 +0100

    viewer: Don't always add photo again after saving
    
    This seems to cause the photo being in the collection twice, causing
    not being able to navigate to the previous photo anymore
    
    Just do it when the photo we save isn't the current photo.
    
    Signed-off-by: Jens Georg <mail jensge org>
    
    https://bugzilla.gnome.org/show_bug.cgi?id=734816

 src/direct/DirectPhotoPage.vala |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)
---
diff --git a/src/direct/DirectPhotoPage.vala b/src/direct/DirectPhotoPage.vala
index a48f9e0..d6ba8ec 100644
--- a/src/direct/DirectPhotoPage.vala
+++ b/src/direct/DirectPhotoPage.vala
@@ -348,8 +348,10 @@ public class DirectPhotoPage : EditingHostPage {
         DirectPhoto photo;
         DirectPhoto.global.fetch(dest, out photo, true);
 
-        DirectView tmp_view = new DirectView(photo);
-        view_controller.add(tmp_view);
+        if (!get_photo().equals(photo)) {
+            DirectView tmp_view = new DirectView(photo);
+            view_controller.add(tmp_view);
+        }
 
         DirectPhoto.global.reimport_photo(photo);
         display_mirror_of(view_controller, photo);