Allow `try…catch` blocks to return a value.

[Bucaran]

Allow `try…catch` blocks to return a value.

Sometimes I wrap a `try…catch` in a function and return a value based in whether there was an error or not.

It would be useful if you could use `return` inside a `try…catch` block to accomplish the same.


```js
 let stuff = try {
   return ...
 } catch (e) { return … ? … : ... }
```
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