found this whitespace fix in a sandbox

src/or/router.c

@@ -152,8 +152,8 @@ assert_identity_keys_ok(void)
   } else {
     /* assert that we have set the client and server keys to be unequal */
     if (server_identitykey)
-       tor_assert(0!=crypto_pk_cmp_keys(client_identitykey,
-                                        server_identitykey));
+      tor_assert(0!=crypto_pk_cmp_keys(client_identitykey,
+                                       server_identitykey));
   }
 }