[NETFILTER]: Convert x_tables matches/targets to centralized error checking
Signed-off-by:Patrick McHardy <kaber@trash.net> Signed-off-by:
David S. Miller <davem@davemloft.net>
Signed-off-by:Patrick McHardy <kaber@trash.net> Signed-off-by:
David S. Miller <davem@davemloft.net>