ash: don't set OLDPWD on startup

Commit f9b753e70 (ash: set current working directory on startup)
set the current working directory of an interactive, non-login
shell during startup to ensure drives mapped to a network share
and symlinks were reported correctly.

It had the side effect of setting OLDPWD.  This is unnecessary
because the current working directory won't have changed.

(GitHub issue #253)

1 files changed, 2 insertions, 1 deletions

diff --git a/shell/ash.c b/shell/ash.c
index f42dc49c3..c2c1f2098 100644
--- a/shell/ash.c
+++ b/shell/ash.c
@@ -15774,7 +15774,8 @@ int ash_main(int argc UNUSED_PARAM, char **argv)
         else if (!login_sh && iflag) {
                 char *cwd = getcwd(NULL, 0);
                 if (cwd) {
-                        docd(cwd, 0);
+                        chdir(cwd);
+                        setpwd(NULL, 0);
                         free(cwd);
                 }
         }