Remove unnecessary clone() calls

src/dir.rs

@@ -109,10 +109,9 @@ impl <'a, T: ReadWriteSeek + 'a> Dir<'a, T> {
 
     /// Creates directory entries iterator.
     pub fn iter(&self) -> DirIter<'a, T> {
-        self.stream.clone();
         DirIter {
             stream: self.stream.clone(),
-            fs: self.fs.clone(),
+            fs: self.fs,
             err: false,
         }
     }

src/file.rs

@@ -240,7 +240,7 @@ impl<'a, T: ReadWriteSeek> Write for File<'a, T> {
                     if self.first_cluster.is_none() {
                         self.set_first_cluster(new_cluster);
                     }
-                    if self.entry.clone().map_or(true, |e| e.inner().size().is_none()) {
+                    if self.entry.iter().next().map_or(true, |e| e.inner().size().is_none()) {
                         // zero new directory cluster
                         trace!("zeroing directory cluser {}", new_cluster);
                         let abs_pos = self.fs.offset_from_cluster(new_cluster);