Fixed compile errors

[garak92]

Hello

I tried to compile this on Arch Linux, but I've got compilation errors. To be more precise: the object files were generated just fine, these errors occurred at the linker phase.
I did some changes, and now it works.

The errors were caused by:

• Use of memmove without including string.h
• Multiple definitions of variables (fixed by declaring them with extern on the header file and initializing them on studiomdl.c...I am not a C magician, so tell me if this isn't the right way to do it)
• Use of deprecated and unsafe getwc function, which I replaced with getcwc from unistd.h

In case this isn't merged, I include the patch here anyways to download in case anyone else is having the same issue.

Cheers,

Elim Garak (just a tailor...)

Patch file (I had to upload it as a .txt instead of .patch because of a dumb GitHub bug, sorry):
0001-Fixed-compile-errors-caused-by-Use-of-deprecated-and.txt

[hossine7]

thank you 😭