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wgetjson_json_item_scan: fix a NULL dereference

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I'm not sure if this is the correct fix.
wgetjson_json_item_callback seems to expect it to be formatted
as "(null)".
This commit is contained in:
YAMAMOTO Takashi 2020-09-29 16:37:18 +09:00 committed by Alin Jerpelea
parent b5d7004a8d
commit b05a1f61e2
1 changed files with 3 additions and 2 deletions
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5
examples/wgetjson/wgetjson_main.c
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@ -260,8 +260,9 @@ static void wgetjson_json_item_scan(cJSON *item, const char *prefix)
while (item) while (item)
{ {
newprefix = malloc(strlen(prefix) + strlen(item->string) + 2); const char *string = item->string ? item->string : "(null)";
sprintf(newprefix, "%s/%s", prefix, item->string); newprefix = malloc(strlen(prefix) + strlen(string) + 2);
sprintf(newprefix, "%s/%s", prefix, string);
dorecurse = wgetjson_json_item_callback(newprefix, item->type, item); dorecurse = wgetjson_json_item_callback(newprefix, item->type, item);
if (item->child && dorecurse) if (item->child && dorecurse)