[chronojump] Fixed last commit

[Xavier de Blas <xaviblas src gnome org>]

commit c8626dfe642fed1baccc136c72a454ca69610ac1
Author: Xavier de Blas <xaviblas gmail com>
Date:   Tue Jul 16 17:04:26 2019 +0200

    Fixed last commit

 src/gui/preferences.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/gui/preferences.cs b/src/gui/preferences.cs
index b459e01a..e143da68 100644
--- a/src/gui/preferences.cs
+++ b/src/gui/preferences.cs
@@ -842,7 +842,7 @@ public class PreferencesWindow
        {
                string pixelFormat = UtilGtk.ComboGetActive(combo_camera_pixel_format);
                string resolution = UtilGtk.ComboGetActive(combo_camera_resolution);
-               hbox_camera/resolution_custom.Visible = resolution == Catalog.GetString("Custom");
+               hbox_camera_resolution_custom.Visible = resolution == Catalog.GetString("Custom");
 
                if(resolution != "" && resolution != Catalog.GetString("Custom") && wfsm != null)
                {