Resolve "Uninitialized mixer"
Description
This MR fixes a minor problem, outlined in issue #515 (closed), where in certain circumstances an uninitialized object is passed to subroutines, which then attempt to use the object.
News snippet
This MR fixes a minor problem, outlined in issue #515 (closed).
Checklist
-
I have checked that my code follows the Octopus coding standards -
I have added tests for all the new features added in this request.
Closes #515 (closed)
Edited by Martin Lueders