fix: fixed cl-update-checker repeating launch

bin/cl-update-checker

@@ -83,7 +83,6 @@ class SysTray(QtWidgets.QSystemTrayIcon):
         self.icon_off.addPixmap(QtGui.QPixmap(self.ICON_NO_UPDATE))
         self.update(has_updates=False)
         self.setVisible(True)
-        print("BEEP")
 
     def run_cl_gui_update(self):
         method = "update"
@@ -225,8 +224,9 @@ class CheckThread(QtWidgets.QMainWindow, UpdateInfo):
 
 if __name__ == '__main__':
     import sys
-    if os.fork():
-        sys.exit(1)
+    pid = os.fork()
+    if pid != 0:
+        sys.exit(0)
     if not user_can_run_update(True):
         sys.stderr.write(_("User can not to perform the system update") + "\n")
         sys.exit(1)
@@ -248,15 +248,10 @@ if __name__ == '__main__':
     try:
         bus = dbus.SessionBus()
     except dbus.exceptions.DBusException as e:
-        print(e)
         sys.exit(1)
-    
     try:
         remote_object = bus.get_object(DBUS_NAME_UPDATER, DBUS_APP_UPDATER)
         g = dbus.Interface(remote_object, DBUS_NAME_UPDATER)
-        props = g.getProperties()
-        # print("already running")
-        # print(props)
         sys.exit(1)
     except Exception as e:
         pass