fix session util (#5780)

Signed-off-by: yefu.chen <yefu.chen@zilliz.com>

cmd/distributed/roles/roles.go

@@ -327,5 +327,5 @@ func (mr *MilvusRoles) Run(localMsg bool) {
 		syscall.SIGTERM,
 		syscall.SIGQUIT)
 	sig := <-sc
-	fmt.Printf("Get %s signal to exit", sig.String())
+	fmt.Printf("Get %s signal to exit\n", sig.String())
 }

internal/util/sessionutil/session_util.go

@@ -231,7 +231,7 @@ func (s *Session) processKeepAliveResponse(ch <-chan *clientv3.LeaseKeepAliveRes
 					close(failCh)
 					return
 				}
-				failCh <- true
+				//failCh <- true
 			}
 		}
 	}()