Suppress no selector in compilation unit warning
Suppress no selector in compilation unit warning

- It’s there and works.
- Workaround for rdar://17806477.

iOSCowboy/SPTPersistentCache,iOSCowboy/SPTPersistentCache,chrisbtreats/SPTPersistentCache,FootballAddicts/SPTPersistentCache,spotify/SPTPersistentCache,chrisbtreats/SPTPersistentCache,FootballAddicts/SPTPersistentCache,FootballAddicts/SPTPersistentCache,chrisbtreats/SPTPersistentCache,FootballAddicts/SPTPersistentCache,iOSCowboy/SPTPersistentCache,spotify/SPTPersistentCache,spotify/SPTPersistentCache,chrisbtreats/SPTPersistentCache