hw/pl061: Remove pointless comparison of array to null

Remove a pointless comparison of an array to null. (There is
no need to check whether s->out[i] is non-null as qemu_set_irq
will do that for us.) Spotted by Coverity (see bug 887883).
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

hw/pl061.c

@@ -103,7 +103,7 @@ static void pl061_update(pl061_state *s)
     s->old_data = out;
     for (i = 0; i < 8; i++) {
         mask = 1 << i;
-        if ((changed & mask) && s->out) {
+        if (changed & mask) {
             DPRINTF("Set output %d = %d\n", i, (out & mask) != 0);
             qemu_set_irq(s->out[i], (out & mask) != 0);
         }