Add else condition in function set_target_state (#107)

closes #105

CHANGELOG.md

@@ -3,6 +3,8 @@ changelog
 This changelog follows the patterns described here: https://keepachangelog.com/en/1.0.0/.
 
 ## [unreleased]
+### fixed
+- Fixed [#105](https://github.com/async-raft/async-raft/issues/105) where function `set_target_state` missing `else` condition.  
 
 ## async-raft 0.6.0
 The big news for this release is that we are now based on Tokio 1.0! Big shoutout to @xu-cheng for doing all of the heavy lifting for the Tokio 1.0 update, along with many other changes which are part of this release.

async-raft/src/core/mod.rs

@@ -254,8 +254,9 @@ impl<D: AppData, R: AppDataResponse, N: RaftNetwork<D>, S: RaftStorage<D, R>> Ra
     fn set_target_state(&mut self, target_state: State) {
         if target_state == State::Follower && !self.membership.contains(&self.id) {
             self.target_state = State::NonVoter;
+        } else {
+            self.target_state = target_state;
         }
-        self.target_state = target_state;
     }
 
     /// Get the next election timeout, generating a new value if not set.