refactor: tiny refactor

Author: sameh-farouk

substrate-node/pallets/pallet-dao/src/dao.rs

@@ -41,7 +41,6 @@ impl<T: Config> Pallet<T> {
         );
 
         let now = frame_system::Pallet::<T>::block_number();
-        let minimum_threshold = T::MotionMinThreshold::get();
         let mut end = now + T::MotionDuration::get();
         // Check if duration is set and is less than 30 days and more than 1 Day
         if let Some(motion_duration) = duration {
@@ -52,7 +51,7 @@ impl<T: Config> Pallet<T> {
             end = now + motion_duration;
         }
         // threshold should be at least the configured minimum threshold for a motion in runtime
-        ensure!(threshold >= minimum_threshold, Error::<T>::ThresholdTooLow);
+        ensure!(threshold >= T::MotionMinThreshold::get(), Error::<T>::ThresholdTooLow);
 
         let index = Self::proposal_count();
         <ProposalCount<T>>::mutate(|i| *i += 1);