wifi.ping() memory leak and undefined

Problem with memory leak in wifi.ping() still exist.

espruino_1v99_esp8266

Where I can get fixed version?

run: 1
process.memory().free 1592
ping result { "totalCount": 0, "totalBytes": 0, "totalTime": 0, "respTime": 83,
  "seqNo": 1, "timeoutCount": 0, "bytes": 32, "error": 0 }
ping result { "totalCount": 0, "totalBytes": 0, "totalTime": 0, "respTime": 10,
  "seqNo": 2, "timeoutCount": 0, "bytes": 32, "error": 0 }
ping result { "totalCount": 0, "totalBytes": 0, "totalTime": 0, "respTime": 7,
  "seqNo": 3, "timeoutCount": 0, "bytes": 32, "error": 0 }
ping result { "totalCount": 0, "totalBytes": 0, "totalTime": 0, "respTime": 7,
  "seqNo": 4, "timeoutCount": 0, "bytes": 32, "error": 0 }
ping result { "totalCount": 0, "totalBytes": 0, "totalTime": 0, "respTime": 7,
  "seqNo": 5, "timeoutCount": 0, "bytes": 32, "error": 0 }
run: 2
process.memory().free 1507
ping result { "totalCount": 0, "totalBytes": 0, "totalTime": 0, "respTime": 11,
  "seqNo": 6, "timeoutCount": 0, "bytes": 32, "error": 0 }
ping result { "totalCount": 0, "totalBytes": 0, "totalTime": 0, "respTime": 8,
  "seqNo": 7, "timeoutCount": 0, "bytes": 32, "error": 0 }
ping result { "totalCount": 0, "totalBytes": 0, "totalTime": 0, "respTime": 7,
  "seqNo": 8, "timeoutCount": 0, "bytes": 32, "error": 0 }
ping result { "totalCount": 0, "totalBytes": 0, "totalTime": 0, "respTime": 7,
  "seqNo": 9, "timeoutCount": 0, "bytes": 32, "error": 0 }
ping result { "totalCount": 0, "totalBytes": 0, "totalTime": 0, "respTime": 8,
  "seqNo": 10, "timeoutCount": 0, "bytes": 32, "error": 0 }
run: 3
process.memory().free 1422
ping result { "totalCount": 0, "totalBytes": 0, "totalTime": 0, "respTime": 10,
  "seqNo": 11, "timeoutCount": 0, "bytes": 32, "error": 0 }
ping result { "totalCount": 0, "totalBytes": 0, "totalTime": 0, "respTime": 8,
  "seqNo": 12, "timeoutCount": 0, "bytes": 32, "error": 0 }