ACK: [PATCH] lib: fwts_json: fix memory leaks on error return paths

[Alex Hung]

On 2020-11-16 2:54 a.m., Colin King wrote:
> From: Colin Ian King <colin.king at canonical.com>
> 
> Memory leaks of str and tmp are occurring on error return paths, free
> them before returning.
> 
> Signed-off-by: Colin Ian King <colin.king at canonical.com>
> ---
>  src/lib/src/fwts_json.c | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/src/lib/src/fwts_json.c b/src/lib/src/fwts_json.c
> index 130e5ccb..c92dd512 100644
> --- a/src/lib/src/fwts_json.c
> +++ b/src/lib/src/fwts_json.c
> @@ -924,9 +924,12 @@ static char *json_object_to_json_string_indent(json_object *obj, int indent)
>  		if (!str)
>  			return NULL;
>  		tmp = str_escape((char *)obj->u.ptr);
> -		if (!tmp)
> +		if (!tmp) {
> +			free(str);
>  			return NULL;
> +		}
>  		str = str_append(str, tmp);
> +		free(tmp);
>  		if (!str)
>  			return NULL;
>  		str = str_append(str, "\"");
> 
Acked-by: Alex Hung <alex.hung at canonical.com>