Make pretty sizeof match parse

src/Windows12/Ast.hs

@@ -163,7 +163,7 @@ instance Pretty Expr where
   pretty (Index arr idx) = parens (pretty arr) <> brackets (pretty idx)
   pretty (Member e m) = pretty e <> "." <> pretty m
   pretty (Cast t e) = parens (pretty t) <> parens (pretty e)
-  pretty (Sizeof t) = "sizeof" <> parens (pretty t)
+  pretty (Sizeof t) = "sizeof " <> pretty t
   pretty (StructInit s fields) = pretty s <+> lbrace <> line <> indent 4 (vsep (punctuate comma (map (\(n, e) -> pretty n <+> "=" <+> pretty e) fields))) <> line <> rbrace
 
 instance Pretty Stmt where