final tweak for the http case

the only scenario in our final else that
would have a realm in the credential is the
http case in which case we want the realm to be there
still. otherwise the credential in this case has no
realm anyways so there is no need to strip one off

lib/metasploit/framework/login_scanner/base.rb

@@ -104,9 +104,6 @@ module Metasploit
                 second_cred.realm_key = nil
                 yield second_cred
               else
-                # Strip any realm off here, as we don't want it
-                credential.realm = nil
-                credential.realm_key = nil
                 yield credential
               end
             end