fix: pr comments

Signed-off-by: GuyLewin <[email protected]>

src/raft.rs

@@ -380,7 +380,7 @@ impl<T: Storage> Raft<T> {
         if raft_state.hard_state != HardState::default() {
             r.load_state(&raft_state.hard_state);
         }
-        if r.term == 0 {
+        if !r.prs.is_empty() && r.term == 0 {
             fatal!(r.logger, "Invalid term value: 0");
         }
         if c.applied > 0 {

src/tracker.rs

@@ -240,6 +240,10 @@ impl ProgressTracker {
         self.votes.clear();
     }
 
+    pub(crate) fn is_empty(&self) -> bool {
+        self.progress.is_empty() && self.votes.is_empty()
+    }
+
     /// Returns true if (and only if) there is only one voting member
     /// (i.e. the leader) in the current configuration.
     pub fn is_singleton(&self) -> bool {