Fix unused_imports lint

Author: sudoBash418

src/symbolize/gimli.rs

@@ -14,7 +14,7 @@ use core::convert::TryInto;
 use core::mem;
 use core::u32;
 use libc::c_void;
-use mystd::ffi::{OsStr, OsString};
+use mystd::ffi::OsString;
 use mystd::fs::File;
 use mystd::path::Path;
 use mystd::prelude::v1::*;
@@ -327,14 +327,14 @@ fn create_mapping(lib: &Library) -> Option<Mapping> {
 ///
 /// Returns `None` if the path does not contain a `!/` separator.
 #[cfg(target_os = "android")]
-fn extract_zip_path_android(path: &OsStr) -> Option<&OsStr> {
+fn extract_zip_path_android(path: &mystd::ffi::OsStr) -> Option<&mystd::ffi::OsStr> {
     use mystd::os::unix::ffi::OsStrExt;
 
     path.as_bytes()
         .windows(2)
         .enumerate()
         .find(|(_, chunk)| chunk == b"!/")
-        .map(|(index, _)| OsStr::from_bytes(path.as_bytes().split_at(index).0))
+        .map(|(index, _)| mystd::ffi::OsStr::from_bytes(path.as_bytes().split_at(index).0))
 }
 
 // unsafe because this is required to be externally synchronized