Add more asserts and debug_asserts (#8541)

* Add more asserts and debug_asserts

fixing #8106

* Remove assignments

* convert debug_assert to runtime assert

substrate/frame/recovery/src/lib.rs

@@ -621,7 +621,8 @@ decl_module! {
 			let active_recovery = <ActiveRecoveries<T>>::take(&who, &rescuer).ok_or(Error::<T>::NotStarted)?;
 			// Move the reserved funds from the rescuer to the rescued account.
 			// Acts like a slashing mechanism for those who try to maliciously recover accounts.
-			let _ = T::Currency::repatriate_reserved(&rescuer, &who, active_recovery.deposit, BalanceStatus::Free);
+			let res = T::Currency::repatriate_reserved(&rescuer, &who, active_recovery.deposit, BalanceStatus::Free);
+			debug_assert!(res.is_ok());
 			Self::deposit_event(RawEvent::RecoveryClosed(who, rescuer));
 		}