pci: irq_state vmstate breakage
Code for saving irq_state got vm_state macros wrong, passing in the wrong parameter. As a result, we both saved a wrong value and restored it to a wrong offset. This leads to device and bus irq counts getting out of sync, which in turn leads to interrupts getting lost or never cleared, such as https://bugzilla.redhat.com/show_bug.cgi?id=588133Signed-off-by: NMichael S. Tsirkin <mst@redhat.com> Acked-by: NJuan Quintela <quintela@redhat.com> (cherry picked from commit c3f8f611)
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