spirv: fix warning in release build

Mark variable MAYBE_UNUSED to avoid unused-but-set-variable warning in
release build.

Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>

diff --git a/src/compiler/spirv/vtn_cfg.c b/src/compiler/spirv/vtn_cfg.c
index 6a43ef8b2dd92853c0ac6921cdee6736f78f67d9..d9096f43ef6b2820bdd58738d2d1e5acfdf8a3f9 100644 (file)
--- a/src/compiler/spirv/vtn_cfg.c
+++ b/src/compiler/spirv/vtn_cfg.c
@@ -36,7 +36,7 @@ vtn_cfg_handle_prepass_instruction(struct vtn_builder *b, SpvOp opcode,
       list_inithead(&b->func->body);
       b->func->control = w[3];
 
-      const struct glsl_type *result_type =
+      MAYBE_UNUSED const struct glsl_type *result_type =
          vtn_value(b, w[1], vtn_value_type_type)->type->type;
       struct vtn_value *val = vtn_push_value(b, w[2], vtn_value_type_function);
       val->func = b->func;