Store dispatch info of calls locally in weight calculation (#7849)

* utility

* sudo

* more

* recovery

* better formatting

Author: shawntabrizi

src/lib.rs

@@ -352,13 +352,16 @@ decl_module! {
 		/// - The weight of the `call` + 10,000.
 		/// - One storage lookup to check account is recovered by `who`. O(1)
 		/// # </weight>
-		#[weight = (
-			call.get_dispatch_info().weight
-				.saturating_add(10_000)
-				 // AccountData for inner call origin accountdata.
-				.saturating_add(T::DbWeight::get().reads_writes(1, 1)),
-			call.get_dispatch_info().class
-		)]
+		#[weight = {
+			let dispatch_info = call.get_dispatch_info();
+			(
+				dispatch_info.weight
+					.saturating_add(10_000)
+					// AccountData for inner call origin accountdata.
+					.saturating_add(T::DbWeight::get().reads_writes(1, 1)),
+				dispatch_info.class,
+			)
+		}]
 		fn as_recovered(origin,
 			account: T::AccountId,
 			call: Box<<T as Config>::Call>