[gnome-boxes] assistant: Display downloadable entries URL in tooltip

[Felipe Borges <felipeborges src gnome org>]

commit d77f29ea2a4f3430712efd92f381d7cd535b5ae6
Author: Olivier Lemasle <o lemasle gmail com>
Date:   Thu Apr 22 19:29:24 2021 +0200

    assistant: Display downloadable entries URL in tooltip

 src/assistant/downloadable-entry.vala | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)
---
diff --git a/src/assistant/downloadable-entry.vala b/src/assistant/downloadable-entry.vala
index 50f5b9ec..3228b475 100644
--- a/src/assistant/downloadable-entry.vala
+++ b/src/assistant/downloadable-entry.vala
@@ -11,10 +11,7 @@
 
     public string title {
         get { return title_label.get_text (); }
-        set {
-            title_label.label = value;
-            set_tooltip_text (value);
-        }
+        set { title_label.label = value; }
     }
 
     public string details {
@@ -28,6 +25,7 @@ public AssistantDownloadableEntry (Osinfo.Media media) {
 
         title = serialize_os_title (media);
         details = media.os.vendor;
+        set_tooltip_text (media.url ?? title);
 
         url = media.url;
     }