Galling for someone

[Chicken Sandwich]

Sadly, that wealth accrued entirely to investors in banks – galling for taxpayers who had no desire to write a cheque to bank bondholders.

What could "galling" mean here? I've consulted the Oxford Consice Dictionary and the Longman Dictionary of Contemporary English and they both have the following definition:

gall 2 verb [ transitive ]

to make someone feel upset and angry because of something that is unfair : It really galled him to see Anita doing so well now.

→ galling

In this context, it doesn't really make sense. How can you be "galling for" someone? Can someone explain this?

Thanks.

[5jj]

It galls me.
It is galling me.
It is galling for me.

The word is used adjectivally in the third example above, and in your example