FYI: savewd.c: avoid shadowing warning

[Jim Meyering]

This fixes a "make distcheck" failure in coreutils:

        * savewd.c (savewd_restore): Don't shadow: s/status/child_status/.

Index: savewd.c
===================================================================
RCS file: /sources/gnulib/gnulib/lib/savewd.c,v
retrieving revision 1.1
diff -u -r1.1 savewd.c
--- savewd.c    18 Sep 2006 03:31:18 -0000      1.1
+++ savewd.c    18 Sep 2006 06:47:28 -0000
@@ -201,13 +201,13 @@
          _exit (status);
        if (0 < child)
          {
-           int status;
-           while (waitpid (child, &status, 0) < 0)
+           int child_status;
+           while (waitpid (child, &child_status, 0) < 0)
              assert (errno == EINTR);
            wd->val.child = -1;
-           if (! WIFEXITED (status))
-             raise (WTERMSIG (status));
-           return WEXITSTATUS (status);
+           if (! WIFEXITED (child_status))
+             raise (WTERMSIG (child_status));
+           return WEXITSTATUS (child_status);
          }
       }
       break;