#409 WIN32: MSVC: fix warnings on dynamic load.

[Carlo Bramini]

I update the patch with support for UNICODE charset posted into r45864 because:

• MSVC complains that malloc() and free() have no prototype.
• GCC15 doesn't like the const modifier applied to alloc_wchar_from_char().

Attached patch includes these tiny fixes.

[gpz]

i have missed that before - instead of malloc/free use lib_malloc and lib_free please (and then you shouldnt have to include stdlib)

[Carlo Bramini]

lib_malloc() and lib_free() are also undefined.
So, I guess that I have to include also "lib.h" for using them.
BTW, since this is a Windows-only source, would you like to use HeapAlloc()/HeapFree() from WinAPI (so, without any extra include file) or you still prefer lib_malloc() and lib_free()?
Nothing changes to me, just let me know which one you prefer.

[gpz]

lib_ functions should be used for everything regarding memory allocation - that allows the debug mode to track memory usage (and find some leaks)

[Carlo Bramini]

Thanks, I attached a new patch with your suggestions.

[gpz]

applied in r45875, thanks!