Stray CR in certain conditions

[kermit4]

Conditions probably more common than when the related code was written:

To: REDACTED
Subject: REDACTED
Date: Fri, 3 May 2019 16:41:13 +0000
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hi

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altermime --debug --input=cr --disclaimer=file.txt

when the input data is LF delimited, shows

mime_alter.c:1293:AM_read_headers:DEBUG: lfcount=0, crlfcount=0
mime_alter.c:1298:AM_read_headers:DEBUG:Delimeter set to CRLF

with --debug

leading it to think its CRLF delimited (as lfcount is not > than crlfcount), and inserts a stray CR after the file.txt

Certainly we can't do if lfcount>=crcount.

It doesn't happen without the "quoted-printable".