[MacPorts] #70850: qt5-qtwebengine @5.15.16_2 : converts to incompatible function type on sequoia

[MacPorts]

#70850: qt5-qtwebengine @5.15.16_2 : converts to incompatible function type on
sequoia
------------------------------+---------------------
  Reporter:  m0nt0            |      Owner:  (none)
      Type:  defect           |     Status:  new
  Priority:  Normal           |  Milestone:
 Component:  ports            |    Version:  2.10.1
Resolution:                   |   Keywords:  sequoia
      Port:  qt5-qtwebengine  |
------------------------------+---------------------

Comment (by markemer):

 I'm wondering how we pick the chromium - we seem to use a random SHA that
 I don't understand - a lot of these fixes have been fixed upstream, and
 I'm wondering if we can update rather than patch. Bumping to
 5.15.17(webengine only) was trivial, but I don't know how and if I can
 bump that SHA.

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Ticket URL: <https://trac.macports.org/ticket/70850#comment:8>
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