[Tarantool-patches] [PATCH luajit] FFI: Handle zero-fill of struct-of-NYI.

[Igor Munkin]

Sergey,

Thanks for the patch! LGTM, with a little tweak for commit message:
| FFI: Handle zero-fill of struct-of-NYI.
|
| (cherry picked from ad65934fa08a65bfb0eb9528731a4394842cc173)
|
| Trace recording is aborted with NYI reason for the case of a struct with
| aggregate allocation. The general solution is way too complex due to
| heterogeneous initialization of the structure. However, zero-fill case
| requires nothing but "memset"-like initialization of GCcdata payload.
|
| As a result of this patch workaround for the zero-fill structures is
| introduced.
|
| Sergey Kaplun:
| * added the description and the test for the problem
|
| Part of tarantool/tarantool#6548
| Related to tarantool/tarantool#4630
| Related to tarantool/tarantool#5885

-- 
Best regards,
IM