fix a nit in getcwd-path-max.m4

[Jim Meyering]

There was a bug in the cleanup code for gl_FUNC_GETCWD_PATH_MAX.
But it doesn't really matter, since it's probably never been
triggered, and the driving shell script also removes the hierarchy.

This would matter only if a preceding mkdir succeeded,
but the immediately following chdir-into-new-directory failed.
Not likely.

2006-06-18  Jim Meyering  <address@hidden>

        * getcwd-path-max.m4 (gl_FUNC_GETCWD_PATH_MAX): Fix typo.
        Low-probability clean-up should be to use rmdir to get rid of
        the just-created directory, not unlink.

Index: m4/getcwd-path-max.m4
===================================================================
RCS file: /fetish/cu/m4/getcwd-path-max.m4,v
retrieving revision 1.19
diff -u -p -r1.19 getcwd-path-max.m4
--- m4/getcwd-path-max.m4       24 Apr 2006 17:50:24 -0000      1.19
+++ m4/getcwd-path-max.m4       18 Jun 2006 14:27:06 -0000
@@ -1,4 +1,4 @@
-#serial 11
+#serial 12
 # Check for several getcwd bugs with long file names.
 # If so, arrange to compile the wrapper function.
 
@@ -157,8 +157,8 @@ main ()
   {
     size_t i;
 
-    /* Unlink first, in case the chdir failed.  */
-    unlink (DIR_NAME);
+    /* Try rmdir first, in case the chdir failed.  */
+    rmdir (DIR_NAME);
     for (i = 0; i <= n_chdirs; i++)
       {
        if (chdir ("..") < 0)