image: Fix setting horizontal instead of vertical

Fix horizontal scrollbar sometimes jumping to center while zooming in.

NEWS

@@ -1,3 +1,8 @@
+45.3
+====
+
+- Fix horizontal scrollbar sometimes jumping to center while zooming in
+
 45.2
 ====
 

data/org.gnome.Loupe.metainfo.xml.in.in

@@ -66,6 +66,13 @@
   </categories>
 
   <releases>
+    <release version="45.3" date="2023-12-12">
+      <description>
+        <ul>
+          <li>Zooming into wide images can no longer cause the horizontal scrollbar to suddenly jump into the center position.</li>
+        </ul>
+      </description>
+    </release>
     <release version="45.2" date="2023-11-28">
       <description>
         <ul>

src/widgets/image.rs

@@ -1426,7 +1426,7 @@ impl LpImage {
             let target_vborder = self.widget_height() - self.image_size().1 as f64 * zoom;
 
             self.imp()
-                .zoom_hscrollbar_transition
+                .zoom_vscrollbar_transition
                 .set(current_vborder.signum() != target_vborder.signum() && current_vborder != 0.);
 
             let animation = self.zoom_animation();