Before, e.g.
```
main() {
L: var x, y;
x = 42;
y = x;
}
```
would produce something like
```
static method main() → dynamic {
{
dynamic x;
dynamic y;
}
x = 42;
y = x;
}
```
i.e., the variable declaration was in another scope, and their usage
isn't legal.
This CL fixes that by either
a) (the normal case) not wrapping it --- the label is not used anyway.
b) (the case that cannot happen) put a label on the first part so the
output would be something like
```
L: dynamic x;
dynamic y;
x = 42;
y = x;
```
Fixes#34943.
Change-Id: I24132665dab53fb8fb024f73dd11e0d1f1945812
Reviewed-on: https://dart-review.googlesource.com/c/82063
Commit-Queue: Jens Johansen <jensj@google.com>
Reviewed-by: Peter von der Ahé <ahe@google.com>
Jens Johansen