introduce CHECKOUT_INIT

Add a static initializer for struct checkout and use it throughout the
code base.  It's shorter, avoids a memset(3) call and makes sure the
base_dir member is initialized to a valid (empty) string.

Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 1 insertions, 3 deletions

diff --git a/apply.c b/apply.c
index e327021..b03d274 100644
--- a/apply.c
+++ b/apply.c
@@ -3334,10 +3334,8 @@ static void prepare_fn_table(struct apply_state *state, struct patch *patch)
 static int checkout_target(struct index_state *istate,
 			   struct cache_entry *ce, struct stat *st)
 {
-	struct checkout costate;
+	struct checkout costate = CHECKOUT_INIT;
 
-	memset(&costate, 0, sizeof(costate));
-	costate.base_dir = "";
 	costate.refresh_cache = 1;
 	costate.istate = istate;
 	if (checkout_entry(ce, &costate, NULL) || lstat(ce->name, st))