nixos/netboot: Fix evaluation error

The function arguments for make-squashfs.nix have changed in
df117acab7bf345500ffada26c240c9f815b7c21, so we need to change them here
as well.

The boot.netboot NixOS VM test now succeeds again.

Signed-off-by: aszlig <aszlig@nix.build>
Cc: @edolstra

aszlig 0811e7f6 e7946b0c

Changed files
+1 -1
nixos
modules
installer
netboot
+1 -1
nixos/modules/installer/netboot/netboot.nix
···
# Create the squashfs image that contains the Nix store.
system.build.squashfsStore = import ../../../lib/make-squashfs.nix {
-
inherit (pkgs) stdenv squashfsTools perl pathsFromGraph;
+
inherit (pkgs) stdenv squashfsTools closureInfo;
storeContents = config.netboot.storeContents;
};