Fix a bug in download-libs.sh already fixed in upstream.
Fix a bug in download-libs.sh already fixed in upstream.

dconnolly/yahoo-end-to-end,coruus/e2e-g2y-cryptolib,postfix/end-to-end,coruus/e2e-g2y-cryptolib,diracdeltas/end-to-end-1,postfix/end-to-end,yahoo/end-to-end,diracdeltas/end-to-end-1,coruus/e2e-g2y-cryptolib,postfix/end-to-end,dconnolly/yahoo-end-to-end,yahoo/end-to-end,yahoo/end-to-end,postfix/end-to-end,dconnolly/yahoo-end-to-end,diracdeltas/end-to-end-1,yahoo/end-to-end,dconnolly/yahoo-end-to-end,diracdeltas/end-to-end-1,coruus/e2e-g2y-cryptolib