Fix 1.64 clippy warnings

Author: printfn

core/src/ast.rs

@@ -516,9 +516,8 @@ pub(crate) fn resolve_identifier<I: Interrupt>(
         };
     }
     if let Some(scope) = scope.clone() {
-        match scope.get(ident, context, int)? {
-            Some(val) => return Ok(val),
-            None => (),
+        if let Some(val) = scope.get(ident, context, int)? {
+            return Ok(val);
         }
     }
     if let Some(val) = context.variables.get(ident.as_str()) {

core/src/num/unit.rs

@@ -731,10 +731,7 @@ impl Value {
         }
 
         // remove units with exponent == 0
-        res_components = res_components
-            .into_iter()
-            .filter(|unit_exponent| unit_exponent.exponent != 0.into())
-            .collect();
+        res_components.retain(|unit_exponent| unit_exponent.exponent != 0.into());
 
         Ok(Self {
             value: res_value,

core/src/value.rs

@@ -370,7 +370,7 @@ impl Value {
                 });
             }
             Self::Fn(name, expr, _scope) => {
-                let expr_str = (&**expr).format(ctx, int)?;
+                let expr_str = expr.format(ctx, int)?;
                 let res = if name.as_str().contains('.') {
                     format!("{name}:{expr_str}")
                 } else {