[PATCH] kconfig: fix a regression when exiting menuconfig without saving

[Li Zefan <lizf@cn.fujitsu.com>]

$ make menuconfig
  HOSTCC  scripts/kconfig/mconf.o
  HOSTLD  scripts/kconfig/mconf
scripts/kconfig/mconf Kconfig

Your configuration changes were NOT saved.

make[1]: *** [menuconfig] Error 1
make: *** [menuconfig] Error 2

Exiting menuconfig without saving, make will report error.
This is a regression, and was introduced by

	commit 564899f9f0a2df85fa367c8749a1fef323cb3215
	Author: Davidlohr Bueso <dave@gnu.org>
	Date:   Sun Aug 21 22:04:09 2011 -0300

	    kconfig: handle SIGINT in menuconfig

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
---
 scripts/kconfig/mconf.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/scripts/kconfig/mconf.c b/scripts/kconfig/mconf.c
index 19e200d..2c6286c 100644
--- a/scripts/kconfig/mconf.c
+++ b/scripts/kconfig/mconf.c
@@ -830,6 +830,8 @@ static int handle_exit(void)
 		fprintf(stderr, _("\n\n"
 				  "Your configuration changes were NOT saved."
 				  "\n\n"));
+		if (res != KEY_ESC)
+			res = 0;
 	}
 
 	return res;
-- 
1.7.3.1