Size of pointer taken for length check rather than sizeof structure.

[jic23]

mctp/src/mctpd.c

Line 1545 in e2fe78c

expect_size = sizeof(resp) + resp->msg_type_count;

Breaks getting message types supported.
(otherwise touch wood this code works great - thanks!)

[mkj]

Thanks @jic23
Missed this in testing since the sizes happened to match on 32 bit platforms.