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, 3 insertions, 6 deletions

diff --git a/btrfs-list.c b/btrfs-list.c
index d54de61..7529e11 100644
--- a/btrfs-list.c
+++ b/btrfs-list.c
@@ -226,13 +226,12 @@ struct btrfs_list_comparer_set *btrfs_list_alloc_comparer_set(void)
 
 	size = sizeof(struct btrfs_list_comparer_set) +
 	       BTRFS_LIST_NCOMPS_INCREASE * sizeof(struct btrfs_list_comparer);
-	set = malloc(size);
+	set = calloc(1, size);
 	if (!set) {
 		fprintf(stderr, "memory allocation failed\n");
 		exit(1);
 	}
 
-	memset(set, 0, size);
 	set->total = BTRFS_LIST_NCOMPS_INCREASE;
 
 	return set;
@@ -474,12 +473,11 @@ static int add_root(struct root_lookup *root_lookup,
 	if (!ret)
 		return 0;
 
-	ri = malloc(sizeof(*ri));
+	ri = calloc(1, sizeof(*ri));
 	if (!ri) {
 		printf("memory allocation failed\n");
 		exit(1);
 	}
-	memset(ri, 0, sizeof(*ri));
 	ri->root_id = root_id;
 
 	if (name && name_len > 0) {
@@ -1208,13 +1206,12 @@ struct btrfs_list_filter_set *btrfs_list_alloc_filter_set(void)
 
 	size = sizeof(struct btrfs_list_filter_set) +
 	       BTRFS_LIST_NFILTERS_INCREASE * sizeof(struct btrfs_list_filter);
-	set = malloc(size);
+	set = calloc(1, size);
 	if (!set) {
 		fprintf(stderr, "memory allocation failed\n");
 		exit(1);
 	}
 
-	memset(set, 0, size);
 	set->total = BTRFS_LIST_NFILTERS_INCREASE;
 
 	return set;