check the url for null (not undefined)
check the url for null (not undefined)


Former-commit-id: 42487e71c1d884f75c09ea5a72fb063653685a63 [formerly b30e8b8b645c186c282387adb8fee4a97b4321c0]
Former-commit-id: 836664fa8d954ce859a8267b7752be97126d6b23
greenify/msa,greenify/msa,greenify/msa