glsl/standalone: segfault with --dump-builder for ir_texture

This patches are replications of e-mails patches from Aug 30 2018 (https://patchwork.freedesktop.org/series/48998/). MR opened to discuss a needing and correctness of logic.

As Ian (@idr) suggested - standalone compiler will stop and dump error-message. Test added for meson. Is there any sense to add test for autotools (@dbaker)?