PSP: Fixed returning success from unsupported SDL_RenderReadPixels(). This also fixed the missing error message.
diff --git a/src/render/psp/SDL_render_psp.c b/src/render/psp/SDL_render_psp.c
index a6f8366..f285131 100644
--- a/src/render/psp/SDL_render_psp.c
+++ b/src/render/psp/SDL_render_psp.c
@@ -861,7 +861,7 @@ PSP_RenderReadPixels(SDL_Renderer * renderer, const SDL_Rect * rect,
Uint32 pixel_format, void * pixels, int pitch)
{
- return 0;
+ return SDL_Unsupported();
}