`G1CollectionSet::_collection_set_max_length` is declared `size_t` but it's initialized with a value of `uint`.
```
void G1CollectionSet::initialize(uint max_region_length) {
...
_collection_set_max_length = max_region_length;
...
}
```
Change it to `uint` for consistency.
Additionally, `_collection_set_cur_length` can be changed to `uint` as well, because of the invariant, `_collection_set_cur_length <= _collection_set_max_length`.
```
void G1CollectionSet::initialize(uint max_region_length) {
...
_collection_set_max_length = max_region_length;
...
}
```
Change it to `uint` for consistency.
Additionally, `_collection_set_cur_length` can be changed to `uint` as well, because of the invariant, `_collection_set_cur_length <= _collection_set_max_length`.