Merge commit 'cab9cb1970c2ec41b5a497f8f5e983ae26940e41' * commit 'cab9cb1970c2ec41b5a497f8f5e983ae26940e41': Check for null before returing a chunk from the pool.
Merge commit 'cab9cb1970c2ec41b5a497f8f5e983ae26940e41' * commit 'cab9cb1970c2ec41b5a497f8f5e983ae26940e41': Check for null before returing a chunk from the pool.