[LEDE-DEV] [PATCH] procd: Remove unnecessary memset calls.

[rosenp at gmail.com]

Tested compile size difference. Saves 32 bytes. ¯\_(ツ)_/¯

On Tue, 2017-11-07 at 12:05 -0800, Rosen Penev wrote:
> Changes allocation to calloc and {} as needed.
> 
> Signed-off-by: Rosen Penev <rosenp at gmail.com>
> ---
>  inittab.c      | 6 ++----
>  plug/hotplug.c | 7 ++-----
>  2 files changed, 4 insertions(+), 9 deletions(-)
> 
> diff --git a/inittab.c b/inittab.c
> index 21172f7..c27c324 100644
> --- a/inittab.c
> +++ b/inittab.c
> @@ -284,8 +284,7 @@ void procd_inittab(void)
>  
>  	regcomp(&pat_inittab, "([a-zA-Z0-9]*):([a-zA-Z0-9]*):([a-zA-
> Z0-9]*):(.*)", REG_EXTENDED);
>  	line = malloc(LINE_LEN);
> -	a = malloc(sizeof(struct init_action));
> -	memset(a, 0, sizeof(struct init_action));
> +	a = calloc(1, sizeof(struct init_action));
>  
>  	while (fgets(line, LINE_LEN, fp)) {
>  		char *tags[TAG_PROCESS + 1];
> @@ -322,8 +321,7 @@ void procd_inittab(void)
>  		if (add_action(a, tags[TAG_ACTION]))
>  			continue;
>  		line = malloc(LINE_LEN);
> -		a = malloc(sizeof(struct init_action));
> -		memset(a, 0, sizeof(struct init_action));
> +		a = calloc(1, sizeof(struct init_action));
>  	}
>  
>  	fclose(fp);
> diff --git a/plug/hotplug.c b/plug/hotplug.c
> index 49c177f..6e55f67 100644
> --- a/plug/hotplug.c
> +++ b/plug/hotplug.c
> @@ -434,12 +434,10 @@ static void handle_button_complete(struct
> blob_attr *msg, struct blob_attr *data
>  	if (!name)
>  		return;
>  
> -	b = malloc(sizeof(*b));
> +	b = calloc(1, sizeof(*b));
>  	if (!b)
>  		return;
>  
> -	memset(b, 0, sizeof(*b));
> -
>  	b->data = malloc(blob_pad_len(data));
>  	b->name = strdup(name);
>  	b->seen = timeout;
> @@ -584,11 +582,10 @@ void hotplug_last_event(uloop_timeout_handler
> handler)
>  
>  void hotplug(char *rules)
>  {
> -	struct sockaddr_nl nls;
> +	struct sockaddr_nl nls = {};
>  	int nlbufsize = 512 * 1024;
>  
>  	rule_file = strdup(rules);
> -	memset(&nls,0,sizeof(struct sockaddr_nl));
>  	nls.nl_family = AF_NETLINK;
>  	nls.nl_pid = getpid();
>  	nls.nl_groups = -1;