score_sync not always syncing scores

[3ndG4me]

If a game has been running for a while and scores are dynamically reset on the main scoring server, then in some cases the client will fail to actually sync.

The end result looks like the client's server is caching scores, it is not. The bug is suspected to be due to an issue with copyfile not copying blank files (even though the score file should always at least have the box names in when populated). As a result a solution might be to null out the client's score file before copying to ensure data is sync'd correctly.