[IPHLPAPI] leaks mem at 28kB/10mins when just idling around in taskmgr

0.4.8-RC-13-g95884e6 gcc dbg
VBox 4.3.40 but no guest additions installed

We are leaking mem at a very slow pace of 28kB/10mins when just idling around in taskmgr.
It's visible in third tab of taskmgr "available mem".
It's moving up and down, up and down, but over time the downs are stronger.
see 1.png vs 2.png

It's not visible in the processes tab for me though.
see 5.png vs 6.png

I would like to see that fixed before the release.

Nothing gets logged.