The unit tests of QPrinter assume that a printer which is default-
initialized is the same printer as the default printer. However, when
no printer is set to default, this is not the case. When no printer
is the default printer, a default-initialized QPrinter will be the
first printer found.
This patch adapts the unit tests to work also when no printer is the
default printer, even though printers are available.
Change-Id: I4967e5b1c4fb8a7c33c911184289ec5cd283fc58
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>