Improve in rule repetition re-sync recovery.

[bd82]

The repetition re-sync recovery can sync to another iteration of the repetition.
but not to the originally expected token immediately following the repetition.

so:

{
"key1" : 1 // missing first comma
"key2" : 2,
"key3" : 3
}

Will successfully recover as it will sync to the next comma.
But:

{
"key1" : 1,
"key2" : 2 // missing second comma
"key3" : 3
}

Will fail re-syncing as it has no comma to re-sync to.

The improvement is to allow re-syncing to the token originally expected after the repetition.
(in the above example this would be "}")