Fix warnings about shadowed variables

git-svn-id: http://root.cern.ch/svn/root/trunk@23633 27541ba8-7e3a-0410-8455-c3a389f83636

net/krb5auth/src/Krb5Auth.cxx

@@ -283,7 +283,7 @@ Int_t Krb5Authenticate(TAuthenticate *auth, TString &user, TString &det,
             return -1;
          }
          // This may have changed
-         TString ticketPrincipal =
+         ticketPrincipal =
              TString(Form("%.*s@%.*s",client->data->length, client->data->data,
                                       client->realm.length, client->realm.data));
       }