Effects for Deck 3 and 4 not working after changing from Shade skin

[mixxxbot]

Reported by: daschuer
Date: 2021-10-12T23:49:38Z
Status: Fix Released
Importance: Medium
Launchpad Issue: lp1946811

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Shade tries to disable all effects on start-up. In since the controls of Deck 3 and 4 are not created on initial start with Shade it creates them through the skin.
The real one cannot be created anymore when changing to a real skin.

```
warning [Main] ControlObject "[EffectRack1_EffectUnit1]" "group_[Channel4]_enable" already created
critical [Main] DEBUG ASSERT: "!"pCreatorCO != nullptr, ControlObject already created"" in function static QSharedPointer<ControlDoublePrivate> ControlDoublePrivate::getControl(const ConfigKey&, ControlFlags, ControlObject*, bool, bool, bool, double) at /home/sperry/workspace/2.3/src/control/control.cpp:158

[mixxxbot]

Commented by: daschuer
Date: 2021-10-13T06:57:00Z

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#4398

[mixxxbot]

Issue closed with status Fix Released.