Only MS IntelliMouse have a Z axis, prevent a false positive triggered

by -Wuninitialized reported by jsg@.

ok stsp@

diff --git a/sys/dev/pckbc/pms.c b/sys/dev/pckbc/pms.c
index 79a5404..7b8a3b6 100644 (file)
--- a/sys/dev/pckbc/pms.c
+++ b/sys/dev/pckbc/pms.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: pms.c,v 1.54 2014/08/29 20:09:09 shadchin Exp $ */
+/* $OpenBSD: pms.c,v 1.55 2015/01/07 10:32:13 mpi Exp $ */
 /* $NetBSD: psm.c,v 1.11 2000/06/05 22:20:57 sommerfeld Exp $ */
 
 /*-
@@ -614,14 +614,10 @@ pms_proc_mouse(struct pms_softc *sc)
        dy = (sc->packet[0] & PMS_PS2_YNEG) ?
            (int)sc->packet[2] - 256 : sc->packet[2];
 
-       switch (sc->protocol->type) {
-       case PMS_STANDARD:
-               dz = 0;
-               break;
-       case PMS_INTELLI:
+       if (sc->protocol->type == PMS_INTELLI)
                dz = (signed char)sc->packet[3];
-               break;
-       }
+       else
+               dz = 0;
 
        wsmouse_input(sc->sc_wsmousedev,
            buttons, dx, dy, dz, 0, WSMOUSE_INPUT_DELTA);