Fix conditional imports

Author: benesch

tokio-postgres/src/config.rs

@@ -19,7 +19,9 @@ use std::ops::Deref;
 #[cfg(unix)]
 use std::os::unix::ffi::OsStrExt;
 #[cfg(unix)]
-use std::path::{Path, PathBuf};
+use std::path::Path;
+#[cfg(unix)]
+use std::path::PathBuf;
 use std::str;
 use std::str::FromStr;
 use std::time::Duration;