'got' and 'expected' are reversed in test output

[chorankates-sfdc]

not ok 10 - on an undefined array, scalar context is 0
#   Failed test 'on an undefined array, scalar context is 0'
#   at 04_about_variables.pl.solved line 81.
#          got: '0'
#     expected: '__'

from

is (scalar @foo, __, 'on an undefined array, scalar context is 0');

should be

is (__, scalar @foo, 'on an undefined array, scalar context is 0');