ipv4: fix 32b build

Address remaining issue after 80ec1927.
Signed-off-by: NMadalin Bucur <madalin.bucur@freescale.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/ipv4/af_inet.c

@@ -1496,7 +1496,7 @@ u64 snmp_fold_field64(void __percpu *mib, int offt, size_t syncp_offset)
 	int cpu;
 
 	for_each_possible_cpu(cpu) {
-		res += snmp_get_cpu_field(mib, cpu, offt, syncp_offset);
+		res += snmp_get_cpu_field64(mib, cpu, offt, syncp_offset);
 	}
 	return res;
 }