Use debug_assert_eq! to avoid comparing PathBuf on release
Use debug_assert_eq! to avoid comparing PathBuf on release

Comparing `PathBuf` adds noticeable overhead, avoid it in release build.

graydon/rust,aidancully/rust,graydon/rust,graydon/rust,rust-lang/rustfmt,aidancully/rust,aidancully/rust,rust-lang/rustfmt,graydon/rust,aidancully/rust,graydon/rust,aidancully/rust,aidancully/rust,graydon/rust,SingingTree/rustfmt,SingingTree/rustfmt