wrong sizeof?

[rpodgorny]

from email:

Hello Radek.
Recently there was a need to use the xotd program (https://github.com/rpodgorny/xotd). Compiled on 64 bit versions.
Found a malnky error:

line 687: nread = sizeof(header);

probably sizeof(*header), because header - the pointer. On 32 bit versions 4 - size of hedaer and poiner, and on 64-bit the header (pointer) 8 size, and *header - 4.

Thanks.
Yours faithfully, Pavel.