The change is probably fine, but I think the commit message is insufficient. In particular: - What were the GL_VENDOR and GL_RENDERER strings before? - What are the GL_VENDOR and GL_RENDERER strings now? - Why are we even getting here? Is GLX_MESA_query_renderer unavailable?
I also wish Mesa wouldn't do this kind of thing; we can fix future Wine releases, but there's nothing we can do for existing Wine releases.