netfilter: nf_tables: Eliminate duplicated code in nf_tables_table_enable()

If something fails in nf_tables_table_enable(), it unregisters the
chains. But the rollback code is the same as nf_tables_table_disable()
almostly, except there is one counter check.  Now create one wrapper
function to eliminate the duplicated codes.

Signed-off-by: Feng <fgao@ikuai8.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

path: root/tools/build/feature/test-cxx.cpp

#include <iostream>
#include <memory>

static void print_str(std::string s)
{
	std::cout << s << std::endl;
}

int main()
{
	std::string s("Hello World!");
	print_str(std::move(s));
	std::cout << "|" << s << "|" << std::endl;
	return 0;
}