[0.4.8][DBGHELP] Fix 3 MSVC warnings about MiniDumpWriteDump() (#643)

[0.4.8][DBGHELP] Fix 3 MSVC warnings about MiniDumpWriteDump() (#643)

- Fixes MSVC errors: "...\dll\win32\dbghelp\minidump.c(857) : error C4028: formal parameter 5 different from declaration", for parameters 5, 6 and 7.
- Fix spec file too.
CORE-7538

I could reproduce those warnings on MSVC2010SP1 x86.
Ftr Wine 7.0 uses the same spec for that func atm, see
https://fossies.org/linux/wine/dlls/dbghelp/dbghelp.spec (18 Jan 2022, 8523 Bytes)

fix picked from 0.4.10-dev-275-g 3766d836c701d59cedb2d014bde572a7e8b40e59