message: replace magic number.
diff: @@ -901,8 +901,8 @@ int swoole_gethostbyname(int flags, char *name, char *addr)
  union
  {
  - char v4[16];
  - char v6[46];
  + char v4[INET_ADDRSTRLEN];
  + char v6[INET6_ADDRSTRLEN];
  } addr_list[SW_DNS_HOST_BUFFER_SIZE];
  int i = 0;
  