K 10
svn:author
V 7
asomers
K 8
svn:date
V 27
2018-02-19T22:09:49.355983Z
K 7
svn:log
V 369
tail: fix "tail -r" for piped input that begins with '\n'

A subtle logic bug, probably introduced in r311895, caused tail to print the
first two lines of piped input in forward order, if the very first character
was a newline.

PR:		222671
Reported by:	Jim Long <freebsd-bugzilla@umpquanet.com>, pprocacci@gmail.com
MFC after:	3 weeks
Sponsored by:	Spectra Logic Corp

END