safari.html.erb in jekyll-favicon-0.2.5

- old
+ new

@@ -1,6 +1,8 @@
 <!-- Safari -->
 <%- favicon_path = File.join prepend_path, Favicon.config['path'] -%>
 <%- Favicon.config['apple-touch-icon']['sizes'].each do |size| -%>
   <link rel="apple-touch-icon" sizes="<%= size %>" href="<%= File.join favicon_path, "favicon-#{size}.png" %>">
 <%- end -%>
+<% if  Favicon.config['source'].svg? %>
 <link rel="mask-icon" color="<%= Favicon.config['safari-pinned-tab']['mask-icon-color'] %>" href="<%= File.join favicon_path, 'safari-pinned-tab.svg' %>">
+<% end %>