Add sizes for free() in auixp(4)

[Frederic Cambus]

Hi tech@,

Here is a diff to add sizes for free() in auixp(4).

Similar diff to the ones previously sent for other audio drivers.

Comments? OK?

Index: sys/dev/pci/auixp.c
===================================================================
RCS file: /cvs/src/sys/dev/pci/auixp.c,v
retrieving revision 1.40
diff -u -p -r1.40 auixp.c
--- sys/dev/pci/auixp.c 3 Sep 2018 05:37:32 -0000       1.40
+++ sys/dev/pci/auixp.c 13 Dec 2019 09:46:27 -0000
@@ -382,7 +382,7 @@ auixp_malloc(void *hdl, int direction, s
        /* get us a dma buffer itself */
        error = auixp_allocmem(sc, size, 16, dma);
        if (error) {
-               free(dma, pool, 0);
+               free(dma, pool, sizeof(*dma));
                printf("%s: auixp_malloc: not enough memory\n",
                    sc->sc_dev.dv_xname);
                return NULL;
@@ -415,7 +415,7 @@ auixp_free(void *hdl, void *addr, int po
                        SLIST_REMOVE(&sc->sc_dma_list, dma, auixp_dma,
                            dma_chain);
                        auixp_freemem(sc, dma);
-                       free(dma, pool, 0);
+                       free(dma, pool, sizeof(*dma));
                        return;
                }
        }
@@ -537,7 +537,7 @@ auixp_allocate_dma_chain(struct auixp_so
        if (error) {
                printf("%s: can't malloc dma descriptor chain\n",
                    sc->sc_dev.dv_xname);
-               free(dma, M_DEVBUF, 0);
+               free(dma, M_DEVBUF, sizeof(*dma));
                return ENOMEM;
        }