libc/glibc: do not try to download NPTL add-on

The NPTL add-on has always been internal, so there is no
reason to try downloading it, it will never succeed.
Add provision to skip other add-ons as well.

For consistency, do the same test in both glibc and eglibc.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>

scripts/build/libc/eglibc.sh

@@ -26,8 +26,12 @@ do_libc_get() {
               "${CT_EGLIBC_REVISION:-HEAD}"
 
     for addon in $(do_libc_add_ons_list " "); do
-        # NPTL addon is not to be downloaded, in any case
-        [ "${addon}" = "nptl" ] && continue || true
+        # Never ever try to download these add-ons,
+        # they've always been internal
+        case "${addon}" in
+            nptl)   continue;;
+        esac
+
         if ! CT_GetSVN "eglibc-${addon}-${CT_LIBC_VERSION}" \
                        "${svn_base}/${addon}"               \
                        "${CT_EGLIBC_REVISION:-HEAD}"

scripts/build/libc/glibc.sh

@@ -27,6 +27,12 @@ do_libc_get() {
 
     # C library addons
     for addon in "${addons_list[@]}"; do
+        # Never ever try to download these add-ons,
+        # they've always been internal
+        case "${addon}" in
+            nptl)   continue;;
+        esac
+
         if ! CT_GetFile "glibc-${addon}-${CT_LIBC_VERSION}"     \
                         {ftp,http}://ftp.gnu.org/gnu/glibc      \
                         ftp://gcc.gnu.org/pub/glibc/releases    \