[PATCH] kconfig: use true and false for bool variable

[Yang Li]

fixed the following coccicheck:
./scripts/kconfig/confdata.c:36:9-10: WARNING: return of 0/1 in function
'is_dir' with return type bool

Reported-by: Abaci Robot <ab...@linux.alibaba.com>
Signed-off-by: Yang Li <yang....@linux.alibaba.com>
---
 scripts/kconfig/confdata.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/kconfig/confdata.c b/scripts/kconfig/confdata.c
index 2568dbe..b65b8c3 100644
--- a/scripts/kconfig/confdata.c
+++ b/scripts/kconfig/confdata.c
@@ -33,7 +33,7 @@ static bool is_dir(const char *path)
        struct stat st;
 
        if (stat(path, &st))
-               return 0;
+               return false;
 
        return S_ISDIR(st.st_mode);
 }
-- 
1.8.3.1