enum abstract, array matching and exhaustiveness bug

This code does not compile with error message: `Unmatched patterns: false`.
Similar code but with `enum` instead of `enum abstract` compiles and works fine.
```haxe
@:enum abstract EFoo(Int) {
var Foo=1;
var Bar=2;
var FooBar=3;
}

class Test {

static function test(foo: EFoo, flag: Bool): String {

return
switch [foo, flag] {
case [Foo, _]: "Foo *";
case [_, true]: "* true";
case [Bar, _]: "Bar false";
case [FooBar, _]: "FooBar false";
}
}

static function main() {
trace(test(Bar, true));
}
}
```