[Errors] error recovery with lambda missing open curly

[mhegazy]

class C {
        where(filter: Iterator<T, boolean>): Query<T> {
            return fromDoWhile(test =>
                var index = 0;
!!! '{' expected.
                return this.doWhile((item, i) => filter(item, i) ? test(item, index++) : true);
!!! Property 'doWhile' does not exist on value of type 'C'.
            });
        }
    }      

Expected: errors as above

Actual:

                var index = 0;
!!! Expression expected.
                return this.doWhile((item, i) => filter(item, i) ? test(item, index++) : true);
!!! Property 'doWhile' does not exist on value of type 'C'.
!!! Cannot find name 'test'.
            });
!!! Property or method expected.
!!! Property or method expected.
        }
!!! Declaration or statement expected.
    }
!!! Declaration or statement expected.

[DanielRosenwasser]

I believe I fixed this in #28.

[DickvdBrink]

I think @DanielRosenwasser is right
Looks solved according to this baseline: https://github.com/Microsoft/TypeScript/blob/master/tests/baselines/reference/parserMissingLambdaOpenBrace1.errors.txt