In commit9ced3148ca("util: avoid calling UNREACHABLE(str) macro without arguments", 2025-07-30) the argument type check in the UNREACHABLE(str) macro in src/util/macros.h was improved to also avoid calling it without arguments, but the definition in src/compiler/libcl/libcl.h was not updated. Apply a similar change to src/compiler/libcl/libcl.h to keep the C and CL macros in sync. Fixes:9ced3148ca("util: avoid calling UNREACHABLE(str) macro without arguments", 2025-07-30) Tested-by: Dieter Nützel <Dieter@nuetzel-hh.de> on gfx8 (Polaris 20) Reviewed-by: Alyssa Rosenzweig <alyssa@rosenzweig.io> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/36508>