The comparison between nullptr and QWeakPointer was just bogus
and ill-formed. The INTEGRITY compiler catches that even if
nothing tries to use the comparison. It is an ill-formed, no
diagnostic required case of a function template never being
able to produce a valid specialization. And while we're at
it, this patch makes the result of comparing a nullptr to
a QWeakPointer or vice versa the same as asking .isNull() from
the weak pointer, because it seems mind-boggling if those
are not the same operation.
Task-number: QTBUG-93093
Change-Id: I0cc80e795c9af2be1b76de05157aa458ef260f2e
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>