avahi: S05avahi-setup.sh: fix s/pid/ipd/ typo

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/avahi/S05avahi-setup.sh

@@ -2,7 +2,7 @@
 
 case "$1" in
     start|"")
-	if [ ! -d /tmp/avahi-autopid ]; then
+	if [ ! -d /tmp/avahi-autoipd ]; then
 	    rm -rf /tmp/avahi-autoipd
 	    mkdir /tmp/avahi-autoipd
 	    chown default.default /tmp/avahi-autoipd