[DFSan] Fix test_inet_pton for big endian archs

[ed]

I think that the preferred way of normally doing this is by using the htonl() function provided by <arpa/inet.h>:

assert(in4.s_addr == htonl(0x7f000001);

There is no need to explicitly take the byte ordering of the architecture into account.

[mohit.bhakkad]

Changed as suggested.

[mohit.bhakkad]

sorry, updating again with a full context diff.

[mohit.bhakkad]

Hi @pcc, @samsonov, could you please review this?

[samsonov]

LGTM

test/dfsan/custom.cc

   int ret4 = inet_pton(AF_INET, addr4, &in4);
   assert(ret4 == 1);
   ASSERT_READ_LABEL(&in4, sizeof(in4), i_label);
-  assert(in4.s_addr == 0x0100007f);
+  assert(in4.s_addr == htonl(0x7f000001));
 
   char addr6[] = "::1";
   dfsan_set_label(j_label, addr6 + 3, 1);