RFR(s): 8152617 add missing wildcards to Optional or() and flatMap()

[Stuart Marks]

On 10/7/16 1:09 PM, Andrej Golovnin wrote:
> 267     public<U> Optional<U> flatMap(Function<? super T, ? extends Optional<? extends U>> mapper)
>
> I think there should be a space between “public” and “<U>”.

Sure, I'll add this. There's also a space missing at a similar spot at the map() 
declaration; I'll fix that too.

thanks

s'marks