[LTP] [PATCH v2] configure.ac: Fix temporary directory ./confXXXXXX not cleanup

[Li Zhijian]

configure
 ->config.status
  -> create temporary directory ./confXXXXXX
  -> cd include/lapi/syscalls
  -> ./regen.sh
  -> cleanup ./confXXXXXX, registered in trap

Where config.status changes the working directory, ./confXXXXXX is not
removed as a result.

Reviewed-by: Li Wang <liwang@redhat.com>
Reviewed-by: Petr Vorel <pvorel@suse.cz>
Fixes: a07008fbec ("configure.ac: Generate linux_syscall_headers.h")
Signed-off-by: Li Zhijian <lizhijian@fujitsu.com>
---
 configure.ac | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index b4ab81e265..d327974efa 100644
--- a/configure.ac
+++ b/configure.ac
@@ -386,7 +386,7 @@ else
     AC_SUBST([WITH_REALTIME_TESTSUITE],["no"])
 fi
 
-AC_CONFIG_COMMANDS([syscalls.h], [cd ${ac_top_srcdir}/include/lapi/syscalls; ./regen.sh])
+AC_CONFIG_COMMANDS([syscalls.h], [cd ${ac_top_srcdir}/include/lapi/syscalls; ./regen.sh; cd - >/dev/null])
 
 # custom functions
 # NOTE: don't create custom functions for simple checks, put them into this file
-- 
2.41.0