UInt compare issues

The following example:

``` haxe
package unit.issues;

class Issue5019 extends Test {
@:keep static inline var VALUE:UInt = 0x9747b28c;
@:keep static var VALUE2:UInt = 0x9747b28c;
function test() {
t(VALUE > 0);
t(VALUE2 == 0x9747b28c);
}
}
```

Gets passed to the generator the following way:

``` haxe
t(false);
t(VALUE2 == (0x9747b28c : Int));
```

which make both examples fail