PCI: aerdrv_acpi.c: remove unneeded NULL check
There's no reason for checking pdev->bus for being NULL here (and we'd anyway Oops 3 lines below if it was). Signed-off-by: NAdrian Bunk <bunk@kernel.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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