Fix suppression of 'encrypted' events.
Fix suppression of 'encrypted' events.

If the events happened quickly enough, some extra sessions were being
created.

Change-Id: I73367f3ba44172d3820e1d6283235f49fb1b119b

samdutton/shaka-player,Afrostream/shaka-player,Ross-cz/shaka-player,ustudio/shaka-player,Ross-cz/shaka-player,intfrr/shaka-player,Afrostream/shaka-player,indiereign/shaka-player,UIKit0/shaka-player,rodrigoramos/shaka-player,treejames/shaka-player,tvoli/shaka-player,viniciusferreira/shaka-player,cmgrecu/shaka-player,palmerj3/shaka-player,shaka-project/shaka-player,blinkbox/shaka-player,baconz/shaka-player,treejames/shaka-player,priyajeet/shaka-player,TheModMaker/shaka-player,TobbeEdgeware/shaka-player,UIKit0/shaka-player,sanbornhnewyyz/shaka-player,intfrr/shaka-player,indiereign/shaka-player,brightcove/shaka-player,vpopolitov/shaka-player,UIKit0/shaka-player,Afrostream/shaka-player,sanbornhnewyyz/shaka-player,brightcove/shaka-player,rodrigoramos/shaka-player,treejames/shaka-player,sanbornhnewyyz/shaka-player,rodrigoramos/shaka-player,cmgrecu/shaka-player,op1ekun/shaka-player,priyajeet/shaka-player,TobbeEdgeware/shaka-player,cmgrecu/shaka-player,TheModMaker/shaka-player,ustudio/shaka-player,shaka-project/shaka-player,baconz/shaka-player,vpopolitov/shaka-player,vpopolitov/shaka-player,shaka-project/shaka-player,intfrr/shaka-player,palmerj3/shaka-player,rodrigoramos/shaka-player,brightcove/shaka-player,tvoli/shaka-player,viniciusferreira/shaka-player,op1ekun/shaka-player,baconz/shaka-player,intfrr/shaka-player,sanbornhnewyyz/shaka-player,indiereign/shaka-player,vimond/shaka-player,vpopolitov/shaka-player,treejames/shaka-player,samdutton/shaka-player,ustudio/shaka-player,viniciusferreira/shaka-player,palmerj3/shaka-player,russitto/shaka-player,Ross-cz/shaka-player,blinkbox/shaka-player,vimond/shaka-player,tvoli/shaka-player,samdutton/shaka-player,palmerj3/shaka-player,blinkbox/shaka-player,op1ekun/shaka-player,tvoli/shaka-player,ustudio/shaka-player,blinkbox/shaka-player,UIKit0/shaka-player,priyajeet/shaka-player,op1ekun/shaka-player,vimond/shaka-player,TobbeEdgeware/shaka-player,viniciusferreira/shaka-player,TheModMaker/shaka-player,shaka-project/shaka-player,Afrostream/shaka-player,priyajeet/shaka-player,russitto/shaka-player,russitto/shaka-player,samdutton/shaka-player,TheModMaker/shaka-player