When determining icon path, check if fileicon is truthy since item.de…

…corate always will be.

Also, use `image_tag` instead of `tag(:img)`

https://bugzilla.redhat.com/show_bug.cgi?id=1439517

app/helpers/quadicon_helper.rb

@@ -395,8 +395,7 @@ def flobj_img_simple(image = nil, cls = '', size = 72)
     image ||= "layout/base-single.png"
 
     content_tag(:div, :class => "flobj #{cls}") do
-      tag(:img, :border => 0, :src => ActionController::Base.helpers.image_path(image),
-          :width => size, :height => size)
+      image_tag(image, :size => size)
     end
   end
 
@@ -561,11 +560,7 @@ def render_ems_cluster_quadicon(item, options)
   def render_non_listicon_single_quadicon(item, options)
     output = []
 
-    img_path = if item.decorate
-                 item.decorate.try(:fileicon)
-               else
-                 "100/#{item.class.base_class.to_s.underscore}.png"
-               end
+    img_path = item.try(:decorate).try(:fileicon) || "100/#{item.class.base_class.to_s.underscore}.png"
 
     output << flobj_img_simple("layout/base-single.png")
     output << flobj_img_simple(img_path, "e72")