swift234

Simplify the highlighting in the subscript case of the inout writeback diagnostic to not
include the index which is confusing.  For example, in:

func testMultiArray(i : Int, j : Int, var array : [[Int]]) {
  swap(&array[i][j], &array[i][i])
}

we now highlight just "array[i]", instead of the subsequent "j" and "i"'s.



Swift SVN r20446