[trac554] Add missing newline at the end of a file

src/lib/asiolink/tests/io_address_unittest.cc

@@ -60,4 +60,4 @@ TEST(IOAddressTest, Equality) {
 TEST(IOAddressTest, Family) {
     EXPECT_EQ(AF_INET, IOAddress("192.0.2.1").getFamily());
     EXPECT_EQ(AF_INET6, IOAddress("2001:0DB8:0:0::0012").getFamily());
-}
+}