unit test fix

Author: antohaUa

test/test_blynk_protocol.py

@@ -23,7 +23,7 @@ def test_get_msg_id_before_loop(self, pb):
     def test_get_msg_id_after_loop(self, pb):
         pb._msg_id = 0xFFFF
         msg_id = pb._get_msg_id()
-        assert msg_id == 0
+        assert msg_id == 1
 
     def test_get_msg_id_defined(self, pb):
         pb._msg_id = 0xFFFF