Satisfy rc_buffer lint in Constant::Binary byte string by copying data
Satisfy rc_buffer lint in Constant::Binary byte string by copying data

We can avoid the data copy again by fixing rustc_ast::ast::LitKind
later.

aidancully/rust,graydon/rust,graydon/rust,aidancully/rust,graydon/rust,aidancully/rust,graydon/rust,aidancully/rust,aidancully/rust,aidancully/rust,graydon/rust,graydon/rust