raft: avoid jump tag to make code more understandable

raft/node.go

@@ -372,14 +372,16 @@ func (n *node) run() {
 			// very sound and likely has bugs.
 			if _, okAfter := r.prs.Progress[r.id]; okBefore && !okAfter {
 				var found bool
-			outer:
 				for _, sl := range [][]uint64{cs.Voters, cs.VotersOutgoing} {
 					for _, id := range sl {
 						if id == r.id {
 							found = true
-							break outer
+							break
 						}
 					}
+					if found {
+						break
+					}
 				}
 				if !found {
 					propc = nil