link to build log in distros list in tstk

Author: olegantonyan

app/views/tasks/_task_show.html.erb

@@ -31,7 +31,7 @@
       <%= d.name %>
       <% if task.progress.failed.include?(d.id) %>
         <% log_blob = task.artefacts.failed.where(distro: d.id).find { _1.filename.end_with?('.log') }&.attachment&.blob %>
-        <%= link_to_if log_blob, 'log', rails_blob_path(log_blob) %>
+        <%= link_to_if log_blob.present?, 'log', rails_blob_path(log_blob) %>
       <% end %>
       <br />
     <% end %>