[PATCH vkd3d 4/6] vkd3d-shader/hlsl: Get rid of append_unop().

[Zebediah Figura]

Signed-off-by: Zebediah Figura 
---
 libs/vkd3d-shader/hlsl.y | 18 ++++++++++--------
 1 file changed, 10 insertions(+), 8 deletions(-)

diff --git a/libs/vkd3d-shader/hlsl.y b/libs/vkd3d-shader/hlsl.y
index 42a6768cc..941f49cfe 100644
--- a/libs/vkd3d-shader/hlsl.y
+++ b/libs/vkd3d-shader/hlsl.y
@@ -1069,12 +1069,6 @@ static struct hlsl_ir_expr *add_expr(struct hlsl_ctx *ctx, struct list *instrs,
     return expr;
 }

-static struct list *append_unop(struct list *list, struct hlsl_ir_node *node)
-{
-    list_add_tail(list, &node->entry);
-    return list;
-}
-
 static struct list *add_unary_expr(struct hlsl_ctx *ctx, struct list *instrs,
         enum hlsl_ir_expr_op op, struct vkd3d_shader_location loc)
 {
@@ -2934,7 +2928,8 @@ postfix_expr:
                     hlsl_error(ctx, @3, VKD3D_SHADER_ERROR_HLSL_INVALID_SYNTAX, "Invalid swizzle "%s".", $3);
                     YYABORT;
                 }
-                $$ = append_unop($1, &swizzle->node);
+                list_add_tail($1, &swizzle->node.entry);
+                $$ = $1;
             }
             else
             {
@@ -3047,6 +3042,7 @@ unary_expr:
         {
             struct hlsl_type *src_type = node_from_list($6)->data_type;
             struct hlsl_type *dst_type;
+            struct hlsl_ir_expr *cast;
             unsigned int i;

if ($2)
@@ -3074,7 +3070,13 @@ unary_expr:
                 YYABORT;
             }

-            $$ = append_unop($6, &hlsl_new_cast(ctx, node_from_list($6), dst_type, &@3)->node);
+            if (!(cast = hlsl_new_cast(ctx, node_from_list($6), dst_type, &@3)))
+            {
+                hlsl_free_instr_list($6);
+                YYABORT;
+            }
+            list_add_tail($6, &cast->node.entry);
+            $$ = $6;
         }

mul_expr: