Goto definition for destructuring should go to the property definition

TypeScript Version: nightly (2.4.0-dev.20170530)

Code

interface I { x: number; }

function f({ x }: I) {
    return x;
}

Expected behavior:

Goto-definition at x in { x } should go to the property declaration.

Actual behavior:

It takes me to the beginning of the identifier that I'm already at.

[evansb]

It works correctly if we don't use shorthand property assignment

interface I {
  /*first*/x: number
}

function f({ /*1*/x: x }: I)  {
}

Might be caused by https://github.com/Microsoft/TypeScript/blob/master/src/services/goToDefinition.ts#L60

Already fixed.