In this combination, the parameter 'supertx_enabled' was never
passed to read_inter_block_mode_info, so the address of the
function of the same name was unintentionally used instead.
This always evaluates to true, which caused lots of test
failures (eg, with test filter *EndToEnd*)

Change-Id: If7a31f517aeb170a3c7cf14ed65e1d8511781718