Wayland is not detected by SDL when Mangohud is LD preloaded for OpenGL

[shmerl]

In such kind of scenario, things fail to run

• Something is using its own version of SDL and uses OpenGL
• MangoHUD is LD preloaded
• SDL is explicitly dynamically overriden, for example with:

export SDL_DYNAMIC_API=/usr/lib/x86_64-linux-gnu/libSDL2-2.0.so.0

• SDL Wayland mode is used with

export SDL_VIDEODRIVER='wayland'

Resulting error makes SDL fail due to "not finding Wayland" which is caused by Mangohud's LD preloading doing something wrong.

[shmerl]

Hmm, I think it fails even without SDL's dynamic override. It just fails no matter what SDL is used.

Error:

Could not initialize SDL: wayland not available!

A simple test - try running scummvm with SDL_VIDEODRIVER='wayland' and with mangohud's LD preloading for OpenGL. It will fail.