dpkg: Remove obsolete conffiles on purge

Closes: #454628

debian/changelog

@@ -1,5 +1,8 @@
 dpkg (1.15.5) UNRELEASED; urgency=low
 
+  [ Guillem Jover ]
+  * Remove obsolete conffiles on purge. Closes: #454628
+
   [ Updated dpkg translations ]
   * German (Sven Joachim).
 

src/remove.c

@@ -441,7 +441,6 @@ static void removal_bulk_remove_configfiles(struct pkginfo *pkg) {
       if (conff->obsolete) {
 	debug(dbg_conffdetail, "removal_bulk conffile obsolete %s",
 	      conff->name);
-	continue;
       }
       varbufreset(&fnvb);
       r= conffderef(pkg, &fnvb, conff->name);