t/eml.t: workaround newer Email::MIME* behavior

Recent (2020) versions of Email::MIME (and/or dependencies)
have different behavior than historical versions which seem
to be less DWIM and perhaps technically more correct.  We'll
retain historical behavior for now, since it doesn't seem to
cause real problems and DWIM-ness is often required to make
sense of historical mail.

Tested on a FreeBSD 11.4 VM with the following packages:

p5-Email-MIME-1.949
p5-Email-MIME-ContentType-1.024_1
p5-Email-MIME-Encodings-1.315_2

0 files changed, 0 insertions, 0 deletions