bisect: avoid tailing CR characters from revision in replay

6c722cb (bisect: allow CRLF line endings in "git bisect replay"
input, 2020-05-07) includes CR as a field separator, but relies on
it not being included in the last field, which breaks at least when
running under OpenBSD 6.7's sh.

Instead of just assume the CR will get swallowed, read the rest of
the line into an otherwise unused variable and ignore it everywhere
except on the call for git bisect start, where it matters.

Signed-off-by: Carlo Marcelo Arenas Belón <carenas@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Author: carenas

git-bisect.sh

@@ -210,7 +210,7 @@ bisect_replay () {
 	test -r "$file" || die "$(eval_gettext "cannot read \$file for replaying")"
 	git bisect--helper --bisect-reset || exit
 	oIFS="$IFS" IFS="$IFS$(printf '\015')"
-	while read git bisect command rev
+	while read git bisect command rev tail
 	do
 		test "$git $bisect" = "git bisect" || test "$git" = "git-bisect" || continue
 		if test "$git" = "git-bisect"
@@ -223,7 +223,7 @@ bisect_replay () {
 		get_terms
 		case "$command" in
 		start)
-			cmd="bisect_start $rev"
+			cmd="bisect_start $rev $tail"
 			eval "$cmd" ;;
 		"$TERM_GOOD"|"$TERM_BAD"|skip)
 			git bisect--helper --bisect-write "$command" "$rev" "$TERM_GOOD" "$TERM_BAD" || exit;;