More efficient apply_mask.
More efficient apply_mask.

arlolra/flashproxy,glamrock/flashproxy,glamrock/flashproxy,glamrock/flashproxy,infinity0/flashproxy,arlolra/flashproxy,arlolra/flashproxy,glamrock/flashproxy,glamrock/flashproxy,infinity0/flashproxy,infinity0/flashproxy,glamrock/flashproxy,arlolra/flashproxy,arlolra/flashproxy,arlolra/flashproxy,infinity0/flashproxy,infinity0/flashproxy,arlolra/flashproxy,infinity0/flashproxy