btrfs-progs: use calloc instead of malloc+memset

This patch is generated from a coccinelle semantic patch:

	identifier t;
	expression e;
	statement s;
	@@
	-t = malloc(e);
	+t = calloc(1, e);
	(
	if (!t) s
	|
	if (t == NULL) s
	|
	)
	-memset(t, 0, e);

Signed-off-by: Silvio Fricke <silvio.fricke@gmail.com>
[squashed patches into one]
Signed-off-by: David Sterba <dsterba@suse.com>

1 files changed, 1 insertions, 2 deletions

diff --git a/mkfs.c b/mkfs.c
index a5802f7d..ecd6fbf8 100644
--- a/mkfs.c
+++ b/mkfs.c
@@ -668,12 +668,11 @@ static int add_file_items(struct btrfs_trans_handle *trans,
 	 * do our IO in extent buffers so it can work
 	 * against any raid type
 	 */
-	eb = malloc(sizeof(*eb) + sectorsize);
+	eb = calloc(1, sizeof(*eb) + sectorsize);
 	if (!eb) {
 		ret = -ENOMEM;
 		goto end;
 	}
-	memset(eb, 0, sizeof(*eb) + sectorsize);
 
 again: