Useless use of private variable in void context at...

##</code><code>##

16:05 >perl -wE "my $c = 0; for (my $n = 3; $n >= 0; $n--) { ++$c; } say $c;"
4

16:05 >perl -wE "my $c = 0; my $n = 3; while ($n--) { ++$c; } say $c;"
3

16:05 >perl -wE "my $c = 0; my $n = 3; for (1 .. $n) { ++$c; } say $c;"
3

16:05 >

##</code><code>##

while ($count-- >= 0) {