glsl: Silence unused value warning.

diff --git a/src/mesa/shader/slang/slang_emit.c b/src/mesa/shader/slang/slang_emit.c
index c9ecbd2..0f67036 100644 (file)
--- a/src/mesa/shader/slang/slang_emit.c
+++ b/src/mesa/shader/slang/slang_emit.c
@@ -1122,6 +1122,8 @@ emit_clamp(slang_emit_info *emitInfo, slang_ir_node *n)
          return inst;
       }
    }
+#else
+   (void) inst;
 #endif
 
    if (!alloc_node_storage(emitInfo, n, n->Children[0]->Store->Size))