fix cargo clippy for hypervisor

zircon-object/src/hypervisor/guest.rs

@@ -114,7 +114,7 @@ impl GuestPhysMemorySetTrait for GuestPhysMemorySet {
                 .handle_page_fault(gpaddr, mapping.get_flags())
                 .map_err(From::from)
         } else {
-            return Err(RvmError::NotFound);
+            Err(RvmError::NotFound)
         }
     }
 

zircon-object/src/hypervisor/mod.rs

@@ -48,6 +48,7 @@ pub struct VmmPageTable(ArchRvmPageTable);
 struct VmmPageTableFlags(MMUFlags);
 
 impl VmmPageTable {
+    #[allow(clippy::new_without_default)]
     pub fn new() -> Self {
         Self(ArchRvmPageTable::new())
     }

zircon-syscall/src/hypervisor.rs

@@ -98,7 +98,7 @@ impl Syscall<'_> {
         }
         let proc = self.thread.proc();
         let guest = proc.get_object_with_rights::<Guest>(guest_handle, Rights::MANAGE_PROCESS)?;
-        let vcpu = Vcpu::new(guest, entry, self.thread.clone())?;
+        let vcpu = Vcpu::new(guest, entry, (*self.thread).clone())?;
         let handle_value = proc.add_handle(Handle::new(vcpu, Rights::DEFAULT_VCPU));
         out.write(handle_value)?;
         Ok(())