added null check for isCurrentUrlIssue in BrowserComponent
added null check for isCurrentUrlIssue in BrowserComponent

HyungJon/HubTurbo,gaieepo/HubTurbo,Sumei1009/HubTurbo,ianngiaw/HubTurbo,HyungJon/HubTurbo,saav/HubTurbo,gaieepo/HubTurbo,Sumei1009/HubTurbo,saav/HubTurbo,ianngiaw/HubTurbo,Honoo/HubTurbo,Honoo/HubTurbo