I'm pretty sure we want to keep supporting statements like
bool ok = connect(~~~);
that is, statements that do use copy initialization and not
direct initialization. As such, QMetaObject::Connection has
to keep using the restricted bool trick and cannot be ported
over to explicit operator bool.
Change-Id: I07a38f7c134686e67b5984aa93fe5cf3201561d7
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
6c19d1c5ea