Don't crash when HTML notifications are used on Windows
Don't crash when HTML notifications are used on Windows

Eventually we'll implement real support for this, but for now not crashing is
more important.

deepak1556/brightray,atom/brightray,bbondy/brightray,bbondy/brightray,lakshmi-srinivas/brightray,tejaspathak/brightray,brave/brightray,atom/brightray,tejaspathak/brightray,lakshmi-srinivas/brightray,hokein/brightray,deepak1556/brightray,hokein/brightray,brave/brightray,lakshmi-srinivas/brightray,paulcbetts/brightray,paulcbetts/brightray