Fixed quote types inconsistency in a warning message

[Andarist]

While reading the source code I've noticed that this could produce such text:
Given action an action
which is really unnatural to say. So I've refactored it a little to be more human-friendly and produce either:

• Given action "SOME_TYPE"
• or Given an action

Also - if you dont like this String(variable) casting approach I may revert this change and amend my PR. But personally I think its more obvious in what it does (casting) + its shorter by 3 chars :P

[timdorr]

We require that all actions have a type field, so I'm actually not sure how that could happen. I would just remove the default text instead.

[Andarist]

Yeah, I was kinda wondering why this fallback is there as Ive remember about the check you have mentioned, but thought this could be intended for some reason. Maybe its there because theoretically combineReducers outcome could be used outside of redux? And the check you have mentioned is in the dispatch itself.

At first I thought this test is testing exactly this, but now I see that 'an action' in the test refers to this part.

That being said if you decide I should drop this fallback entirely I think this safe-guard should be dropped, as we would treat then .type to be available always in the reducer.

Let me know what you decide and I'll update my PR accordingly.

[Andarist]

@timdorr ping ;)

this is a silly PR really, but would like to have it stop hanging as open in my PR tab, I understand though if you are too busy right now