build-windows-msvc is broken

[rexim]

introduced in #25

[Tschitschibor]

"ded\dependencies\SDL2\include\SDL2\SDL2\begin_code.h"

Is it correct that there are two nested SDL2 folders?

[kolumb]

@Tschitschibor No, it looks like that you launched setup_dependencies.bat second time. Delete dependencies folder first and only then launch setup_dependencies.bat.
Fixing it would complicate bat file even more. It's already planned to be changed so there's no need of setup step.

[IRooc]

The latest code is building in both CI and locally in this PR #42