Remove last queue(3) *_END() user from tree

[Klemens Nanni]

queue(3) NOTES says
    The SLIST_END(), LIST_END(), SIMPLEQ_END(), STAILQ_END() and TAILQ_END()
    macros are deprecated; they provided symmetry with the historical
    CIRCLEQ_END() and just expand to NULL.

We still have one user, though:
        $ cd /usr/src/
        $ grep -rslwE '(S?LIST|(SIMPLE|S?TAIL))Q_END'
        sys/dev/pci/pci.c
        sys/sys/smr.h
        sys/sys/queue.h
        share/man/man3/queue.3

No object change.
OK?

Index: pci.c
===================================================================
RCS file: /cvs/src/sys/dev/pci/pci.c,v
retrieving revision 1.125
diff -u -p -r1.125 pci.c
--- pci.c       17 Jun 2022 10:08:36 -0000      1.125
+++ pci.c       27 Nov 2022 22:04:51 -0000
@@ -1293,7 +1293,7 @@ pciioctl(dev_t dev, u_long cmd, caddr_t 
                    func == sel->pc_func)
                        break;
        }
-       if (pd == LIST_END(&pci->sc_devs))
+       if (pd == NULL)
                return ENXIO;
 
        tag = pci_make_tag(pc, sel->pc_bus, sel->pc_dev, sel->pc_func);