Fixed potential problem of freeing 2d array when in one of the rows vmalloc returned NULL. Made all functions static (I guess the alternative would be to use names with dnsfirewall__ prefix).
Fixed potential problem of freeing 2d array when in one of the rows vmalloc returned NULL.
Made all functions static (I guess the alternative would be to use names with dnsfirewall__ prefix).

adw1n/dns-spoofer,adw1n/dns-spoofer,adw1n/dns-spoofer