bigint.test:

  Updated test case for bug #28625.


mysql-test/t/bigint.test:
  Updated test case for bug #28625.

mysql-test/t/bigint.test

@@ -299,11 +299,14 @@ select cast(-19999999999999999999 as signed);
 # Bug #28625: -9223372036854775808 doesn't fit in BIGINT.
 #
 
+# PS protocol gives different metadata for `Max length' column
+--disable_ps_protocol
 --enable_metadata
 select -9223372036854775808;
 select -(9223372036854775808);
 select -((9223372036854775808));
 select -(-(9223372036854775808));
 --disable_metadata
+--endble_ps_protocol
 select --9223372036854775808, ---9223372036854775808, ----9223372036854775808;
 select -(-9223372036854775808), -(-(-9223372036854775808));