L2SS-244: Return a scalar if given a scalar

devices/clients/opcua_connection.py

@@ -199,7 +199,8 @@ class ProtocolAttribute:
         value = numpy.array(self.node.get_value())
 
         if self.dim_y + self.dim_x == 1:
-            return numpy.array([value])
+            # scalar
+            return value
         elif self.dim_y != 0:
             value = numpy.array(numpy.split(value, indices_or_sections=self.dim_y))
         elif self.dim_y + self.dim_x == 1: