Fix UTF-8 replace problems in whois

Fix error in parsing/formatting output of whois command due
to UTF-8 errors.

whois.py

@@ -40,7 +40,7 @@ def lookup(key):
         if(re.match('^\s*$',l) and not begin):
             continue
         if(l[0] != '%'):
-            res=res+l.decode('utf-8', errors='replace')
+            res=res+l.decode('utf-8','replace')
             begin = True
 
     return res
@@ -57,6 +57,6 @@ def lookup_as_name(asn):
         m = asname_regex.match(l)
         if(m):
             asname_cache[asn] = m.group(2)
-            return m.group(2).decode('utf-8', errors='replace')
+            return m.group(2).decode('utf-8','replace')
 
     return defaults.STRING_UNKNOWN