cli (base): fix exit code transmission when SystemExit is catched.

libervia/cli/base.py

@@ -734,10 +734,10 @@ class LiberviaCli:
         self.loop = LiberviaCLILoop()
         try:
             self.loop.run(self, args, namespace)
-        except SystemExit:
+        except SystemExit as e:
             # The loop is stopped, but we execute it one more time to call `a_quit` which
             # will call any cleaning method including async ones.
-            asyncio.get_event_loop().run_until_complete(self.a_quit())
+            asyncio.get_event_loop().run_until_complete(self.a_quit(e.code))
 
     @classmethod
     def run(cls):
@@ -804,7 +804,7 @@ class LiberviaCli:
         if raise_exc:
             raise QuitException
 
-    async def a_quit(self, exit_code=0, raise_exc=True):
+    async def a_quit(self, exit_code: int=0, raise_exc=True):
         """Execute async quit callback before actually quitting
 
         This method should be prefered to ``quit``, as it executes async quit callbacks