src: set: Do not print unset values in json

It changes the parse and the snprint functions to omit unset values.

This json file is gotten for a set:
{
  "set": {
    "name": "mi6set3",
    "table": "test6",
    "flags": "0",
    "family": "unknown",
    "key_type": "0",
    "key_len": "0",
    "set_elem": [
      {
        "flags": "0",
        "key": {
          "data_reg": {
            "type": "value",
            "len": "16",
            "data0": "0x000080fe",
            "data1": "0x00000000",
            "data2": "0xffb30202",
            "data3": "0x89001efe"

Now, This json file is gotten for a set without unset elements.
{
  "set": {
    "name": "mi6set3",
    "table": "test6",
    "family": "unknown",
    "set_elem": [
      {
        "key": {
          "data_reg": {
            "type": "value",
            "len": "16",
            "data0": "0x000080fe",
            "data1": "0x00000000",
            "data2": "0xffb30202",
            "data3": "0x89001efe"

[ Note: These fields are unset when they are obtained from the set element
  information --pablo. ]

Signed-off-by: Ana Rey <anarey@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

0 files changed, 0 insertions, 0 deletions