Leaks like hell

[hiiamboris]

Please, fill all relevant items:

• [+] I have read CONTRIBUTING.rst

• [+] I have tried with the latest pre-release version and I still can reproduce the issue.

Tribler version/branch+revision:

7.7.0, 7.7.1

Operating system and version:

Win 10.0.19041.685

Steps to reproduce the behavior:

Do nothing. Let Tribler be up for a while.

Expected behavior:

Stable memory footprint, inside the SANE limits (200-300MB)

Actual behavior:

This is like after a day of uptime or so:

Phew. Only 10GB. Why do I even bother? ;)

Relevant log file output:

doesn't seem to be anything relevant there

[ichorid]

Duplicate of #5934