fast-export --export-marks: fix off by one error

The export_marks() function iterated over a (potentially sparsely
populated) hashtable, but it accessed it starting from offset 1 and one
element beyond the end.

Noticed by SungHyun Nam.

Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 1 insertions, 4 deletions

diff --git a/decorate.c b/decorate.c
index 23f6b00..d9668d2 100644
--- a/decorate.c
+++ b/decorate.c
@@ -37,10 +37,7 @@ static void grow_decoration(struct decoration *n)
 {
 	int i;
 	int old_size = n->size;
-	struct object_decoration *old_hash;
-
-	old_size = n->size;
-	old_hash = n->hash;
+	struct object_decoration *old_hash = n->hash;
 
 	n->size = (old_size + 1000) * 3 / 2;
 	n->hash = xcalloc(n->size, sizeof(struct object_decoration));