fix clippy lints

Signed-off-by: Alexandra Iordache <[email protected]>

Author: Alexandra Iordache

src/atomic.rs

@@ -116,7 +116,7 @@ impl<M: GuestMemory> Deref for GuestMemoryLoadGuard<M> {
     type Target = M;
 
     fn deref(&self) -> &Self::Target {
-        &*self.guard
+        &self.guard
     }
 }
 

src/guest_memory.rs

@@ -737,7 +737,7 @@ impl<T: GuestMemory + ?Sized> Bytes<GuestAddress> for T {
             buf.len(),
             addr,
             |offset, _count, caddr, region| -> Result<usize> {
-                region.write(&buf[offset as usize..], caddr)
+                region.write(&buf[offset..], caddr)
             },
         )
     }
@@ -747,7 +747,7 @@ impl<T: GuestMemory + ?Sized> Bytes<GuestAddress> for T {
             buf.len(),
             addr,
             |offset, _count, caddr, region| -> Result<usize> {
-                region.read(&mut buf[offset as usize..], caddr)
+                region.read(&mut buf[offset..], caddr)
             },
         )
     }

src/mmap_unix.rs

@@ -610,7 +610,7 @@ mod tests {
             MmapRegion::build(Some(FileOffset::from_arc(a, offset)), size, prot, flags).unwrap();
 
         assert_eq!(r.size(), size);
-        assert_eq!(r.file_offset().unwrap().start(), offset as u64);
+        assert_eq!(r.file_offset().unwrap().start(), offset);
         assert_eq!(r.prot(), libc::PROT_READ | libc::PROT_WRITE);
         assert_eq!(r.flags(), libc::MAP_NORESERVE | libc::MAP_PRIVATE);
         assert!(r.owned());