Start Ra.seenCount at 1

In order for an RA filter to be generated / an Ra class to be
instantiated, the RA must have been seen at least once.

seenCount is subsequently increased when an RA is matched in
processRa().

Test: TH
Change-Id: Ib203921225523f2f23cd106abf11f0e21cd159d6
1 file changed