Fixed map_clone clippy warnings

Author: ZapAnton

vm/src/compile.rs

@@ -163,7 +163,7 @@ impl Compiler {
                         _ => {
                             self.emit(Instruction::Import {
                                 name: module.clone(),
-                                symbol: symbol.clone().map(|s| s.clone()),
+                                symbol: symbol.clone(),
                             });
                             self.emit(Instruction::StoreName {
                                 name: match alias {

vm/src/pyobject.rs

@@ -736,7 +736,7 @@ pub trait AttributeProtocol {
 fn class_get_item(class: &PyObjectRef, attr_name: &str) -> Option<PyObjectRef> {
     let class = class.borrow();
     match class.payload {
-        PyObjectPayload::Class { ref dict, .. } => dict.borrow().get(attr_name).map(|v| v.clone()),
+        PyObjectPayload::Class { ref dict, .. } => dict.borrow().get(attr_name).cloned(),
         _ => panic!("Only classes should be in MRO!"),
     }
 }
@@ -766,7 +766,7 @@ impl AttributeProtocol for PyObjectRef {
                 None
             }
             PyObjectPayload::Instance { ref dict } => {
-                dict.borrow().get(attr_name).map(|v| v.clone())
+                dict.borrow().get(attr_name).cloned()
             }
             _ => None,
         }