Remove redundant closure

clippy emits:

  error: redundant closure

As suggested, remove the redundant closure.

Author: tcharding

src/policy/compiler.rs

@@ -1617,7 +1617,7 @@ mod tests {
             .map(|pubkey| Arc::new(Concrete::Key(*pubkey)))
             .collect();
         let thresh_res = Concrete::Thresh(keys.len() - 1, keys).compile::<Legacy>();
-        let ops_count = thresh_res.clone().and_then(|m| Ok(m.ext.ops.op_count()));
+        let ops_count = thresh_res.clone().map(|m| m.ext.ops.op_count());
         assert_eq!(
             thresh_res,
             Err(CompilerError::LimitsExceeded),

src/policy/concrete.rs

@@ -1105,7 +1105,7 @@ mod compiler_tests {
         let policies: Vec<Arc<Concrete<String>>> = vec!["pk(A)", "pk(B)", "pk(C)", "pk(D)"]
             .into_iter()
             .map(|st| policy_str!("{}", st))
-            .map(|p| Arc::new(p))
+            .map(Arc::new)
             .collect();
 
         let combinations = generate_combination(&policies, 1.0, 2);
@@ -1133,10 +1133,7 @@ mod compiler_tests {
         let expected_comb = vec![comb_a, comb_b, comb_c, comb_d]
             .into_iter()
             .map(|sub_pol| {
-                (
-                    0.25,
-                    Arc::new(Policy::Thresh(2, sub_pol.into_iter().map(|p| Arc::new(p)).collect())),
-                )
+                (0.25, Arc::new(Policy::Thresh(2, sub_pol.into_iter().map(Arc::new).collect())))
             })
             .collect::<Vec<_>>();
         assert_eq!(combinations, expected_comb);