another "id -n" -> plain "id" change

[Paul Eggert]

I installed this:

2005-04-19  Paul Eggert  <address@hidden>

        * tests/chmod/setgid: Use numeric group ids, not symbolic group names,
        since the latter can have shell metacharacters in them (e.g., spaces).
        This follows up to the 2005-01-17 patch, which missed this occurrence.

--- setgid.~1.7.~       2005-04-18 16:27:00 -0700
+++ setgid      2005-04-18 16:34:28 -0700
@@ -36,7 +36,7 @@ chmod g+s d 2> /dev/null ||
     # it may happen that when you create a directory, its group isn't one
     # to which you belong.  When that happens, the above chmod fails.  So
     # here, upon failure, we try to set the group, then rerun the chmod 
command.
-    group=${COREUTILS_GROUP-`(id -ng || /usr/xpg4/bin/id -ng) 2>/dev/null`}
+    group=${COREUTILS_GROUP-`(id -g || /usr/xpg4/bin/id -g) 2>/dev/null`}
     if test "$group"; then
       chgrp "$group" d || framework_failure=1
       chmod g+s d || framework_failure=1