Wait for route manager cleanup on tunnel state machine exit

Author: dlon

talpid-core/src/tunnel_state_machine/mod.rs

@@ -409,7 +409,9 @@ impl TunnelStateMachine {
             }
         }
 
-        log::debug!("Exiting tunnel state machine loop");
+        log::debug!("Tunnel state machine exited");
+
+        runtime.block_on(self.shared_values.route_manager.stop());
     }
 }