PASM and PBC exit codes not correctly detected by Parrot::Test

[dukeleto]

The functions pasm_exit_code_is and pbc_exit_code_is may be incorrectly detecting the exit code of a parrot script when no explicit exit() is given.

See the TODO tests in t/op/exit.t .

[ligne]

it looks like this has been fixed since March at least?  https://github.com/parrot/parrot/commit/127bc9