WowAce

This error happen on Classic PTR (not tbc) where this kind of error trigger, it result in target frame showing incorrect character name

```
20x ShadowedUnitFrames\modules\layout.lua:479: Division by zero
ShadowedUnitFrames\modules\layout.lua:479: in function `SetupText'
ShadowedUnitFrames\modules\layout.lua:144: in function `Load'
ShadowedUnitFrames\modules\units.lua:284: in function `SetVisibility'
ShadowedUnitFrames\modules\units.lua:472: in function <ShadowedUnitFrames\modules\units.lua:352>
[C]: in function `SetAttribute'
ShadowedUnitFrames\modules\units.lua:816: in function `LoadUnit'
ShadowedUnitFrames\modules\units.lua:1179: in function `InitializeFrame'
...aceShadowedUnitFrames\ShadowedUnitFrames-v4.2.3-Classic-3-g4aeee73.lua:271: in function `LoadUnits'
...aceShadowedUnitFrames\ShadowedUnitFrames-v4.2.3-Classic-3-g4aeee73.lua:95: in function `OnInitialize'
...aceShadowedUnitFrames\ShadowedUnitFrames-v4.2.3-Classic-3-g4aeee73.lua:868: in function <...aceShadowedUnitFrames\ShadowedUnitFrames.lua:866>
```

I also get a lot of this error

```
3538x ShadowedUnitFrames\modules\auras-Auras.lua:680: attempt to index field 'buffs' (a nil value)
ShadowedUnitFrames\modules\auras-Auras.lua:680: in function `?'
ShadowedUnitFrames\modules\units.lua:21: in function `FullUpdate'
ShadowedUnitFrames\modules\units.lua:295: in function `CheckUnitStatus'
ShadowedUnitFrames\modules\units.lua:211: in function <ShadowedUnitFrames\modules\units.lua:208>
[C]: in function `Show'
FrameXML\SecureStateDriver.lua:83: in function <FrameXML\SecureStateDriver.lua:73>
FrameXML\SecureStateDriver.lua:137: in function <FrameXML\SecureStateDriver.lua:119>
```

Export of profile used: https://pastebin.com/4fqYpTsX