do not declare bootif_dev local

Signed-off-by: Christian Hesse <mail@eworm.de>

archiso/initcpio/hooks/archiso_pxe_common

 # vim: set ft=sh:
 
 run_hook () {
-    local i net_mac bootif_mac bootif_dev
+    # Do *not* declare 'bootif_dev' local! We need it in run_latehook().
+    local i net_mac bootif_mac
     # These variables will be parsed from /tmp/net-*.conf generated by ipconfig
     local DEVICE
     local IPV4ADDR IPV4BROADCAST IPV4NETMASK IPV4GATEWAY IPV4DNS0 IPV4DNS1