Fix usage of proc_macro::is_available() #303
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In dtolnay#300 I made a mistake with the #[cfg] causing proc_macro::is_available() to never actually be used. I have now double checked that it is actually used on Rust 1.57+.
dtolnay
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Dec 5, 2021
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In #300 I made a mistake with the
#[cfg]causingproc_macro::is_available()to never actually be used. I have now double checked that it is actually used on Rust 1.57+.Closes rust-lang/rustc_codegen_cranelift#1101
Closes rust-lang/rustc_codegen_cranelift#1209