[tor-bugs] #20005 [Applications/Tor Browser]: Backport - easy fixes for memory leaks investigation

[Tor Bug Tracker & Wiki]

#20005: Backport - easy fixes for memory leaks investigation
-------------------------------------+-------------------------------------
     Reporter:  bugzilla             |      Owner:  tbb-team
         Type:  defect               |     Status:  new
     Priority:  Medium               |  Milestone:
    Component:  Applications/Tor     |    Version:
  Browser                            |   Keywords:  tbb-performance-
     Severity:  Normal               |  leaking, tbb-easy
Actual Points:                       |  Parent ID:  #18047
       Points:                       |   Reviewer:
      Sponsor:                       |
-------------------------------------+-------------------------------------
 [https://bugzilla.mozilla.org/show_bug.cgi?id=1234343 Bug 1234343 - Overly
 large values reported for gfx/heap-textures]
 (changes size_t to ptrdiff_t (which "was fixed" from int32_t by previous
 bug) in FF46 (and Mozilla has closed related ticket with that confirmed
 bug as WORKSFORME for FF45, ugh
 [https://bugzilla.mozilla.org/show_bug.cgi?id=1262088 Bug 1262088 -
 Incorrect about:memory reports (gfx/heap-textures) when playing HTML5
 videos])
 Without it TBB shows
 {{{
 │  ├──3,155.00 MB (93.38%) ── heap-textures
 }}}
 (As {{{heap-textures}}} causes a half of memory leaks, the helper ticket
 is worth tracking
 [https://bugzilla.mozilla.org/show_bug.cgi?id=1290100 Bug 1290100 -
 Decompose explicit/gfx/heap-textures])

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/20005>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online