download.pl: Change SourceForge address to HTTPS.

SourceForge has supported HTTPS for its downloads for a long time now.

I have not been able to see any failures resulting from this change.

Signed-off-by: Rosen Penev <rosenp@gmail.com>

scripts/download.pl

@@ -191,7 +191,7 @@ foreach my $mirror (@ARGV) {
 	if ($mirror =~ /^\@SF\/(.+)$/) {
 		# give sourceforge a few more tries, because it redirects to different mirrors
 		for (1 .. 5) {
-			push @mirrors, "http://downloads.sourceforge.net/$1";
+			push @mirrors, "https://downloads.sourceforge.net/$1";
 		}
 	} elsif ($mirror =~ /^\@APACHE\/(.+)$/) {
 		push @mirrors, "https://mirror.netcologne.de/apache.org/$1";