libICE: Securely download source archive over HTTPS

Update the URL to the target of the redirect.

    $ curl -I http://xorg.freedesktop.org/releases
    HTTP/1.1 301 Moved Permanently
    Date: Tue, 18 Dec 2018 15:23:24 GMT
    Server: Apache/2.4.25 (Debian)
    Location: https://www.x.org/releases
    Content-Type: text/html; charset=iso-8859-1

libICE.be0

@@ -9,7 +9,7 @@
 ## The source URL(s) define the location of the sources that will be
 ## downloaded. Version variables may be used to simplify reuse of this bee-file.
 
-SRCURL[0]="http://xorg.freedesktop.org/releases/individual/lib/libICE-${PKGVERSION}.tar.bz2"
+SRCURL[0]="https://www.x.org/releases/individual/lib/libICE-${PKGVERSION}.tar.bz2"
 
 ###############################################################################
 ## Add URLs/pathes to patch files to the PATCHURL array.