Delete desc when :keep=False

Still needed for Firefox, cause empty <desc/> still show up instead of content in feed preview

morss/morss.py

@@ -590,10 +590,10 @@ def After(rss, options):
             del item.desc
             del item.content
 
-        if item.desc and item.content:
-            if options.clip:
+        if options.clip and item.desc and item.content:
             item.content = item.desc + "<br/><br/><center>* * *</center><br/><br/>" + item.content
             del item.desc
+
         if not options.keep:
             del item.desc