glewInit() failed on wayland [PPSSPP]

Using PPSSPP core, starting a game results in a crash:
```
[INFO] [GL]: Using 1 textures.
[INFO] [GL]: Loaded 1 program(s).
[INFO] [GL]: Initializing HW render (2048 x 2048).
[INFO] [GL]: Max texture size: 16384 px, renderbuffer size: 16384 px.
[INFO] [GL]: Supports FBO (render-to-texture).
[INFO] [Joypad]: Found joypad driver: "sdl2".
[INFO] [Font]: Using font rendering backend: bitmap.
[INFO] [Video]: Found display server: null
[libretro INFO] [G3D] Context reset
[libretro ERROR] [G3D] glewInit() failed.
```

The issue only occurs on Wayland.

Start by reproducing the crash with the PPSSPP core on Wayland and trace the initialization path around the reported glewInit() failure. The issue names no source files or tests; done would mean identifying and fixing the Wayland-specific initialization failure so starting a game no longer crashes.

Written by the indexing model from the issue text.