glsl/pp: declare sl_pp_purify_options to silence warning

diff --git a/src/glsl/pp/sl_pp_token.h b/src/glsl/pp/sl_pp_token.h
index 7a8fa2f1b9d2ad893ff38823dd50984ce1fdea08..ba9834a9f242db498cb3956b2ff9fbe1d8b7e00e 100644 (file)
--- a/src/glsl/pp/sl_pp_token.h
+++ b/src/glsl/pp/sl_pp_token.h
@@ -120,6 +120,8 @@ struct sl_pp_token_info {
    union sl_pp_token_data data;
 };
 
+struct sl_pp_purify_options;
+
 int
 sl_pp_tokenise(struct sl_pp_context *context,
                const char *input,