ActiveD: if catch NNFE and RNFE ~> use a generic notificaiton icon

fixes a few exceptions with active D and gives a generic notification icon.
also, only get the next notification if mNotification == null.

PS2: whitespace

Change-Id: I88242e56209bdc366ac53a816332be139f905d28
Merge "ActiveD: if catch NNFE and RNFE ~> use a generic notificaiton icon" into jb43