use CALLOC_ARRAY

Add and apply a semantic patch for converting code that open-codes
CALLOC_ARRAY to use it instead.  It shortens the code and infers the
element size automatically.

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

1 files changed, 1 insertions, 1 deletions

diff --git a/packfile.c b/packfile.c
index 1fec12a..ea29f4b 100644
--- a/packfile.c
+++ b/packfile.c
@@ -638,7 +638,7 @@ unsigned char *use_pack(struct packed_git *p,
 			if (p->pack_fd == -1 && open_packed_git(p))
 				die("packfile %s cannot be accessed", p->pack_name);
 
-			win = xcalloc(1, sizeof(*win));
+			CALLOC_ARRAY(win, 1);
 			win->offset = (offset / window_align) * window_align;
 			len = p->pack_size - win->offset;
 			if (len > packed_git_window_size)