Fix thread number parsing for iOS 8
Fix thread number parsing for iOS 8

cnbin/NSLogger,Palleas/NSLogger,kennethjiang/Teleport-NSLog,LuoLee/NSLogger,LuoLee/NSLogger,253627764/NSLogger,FumikoGlover/Teleport,FumikoGlover/Teleport,Palleas/NSLogger,zilaiyedaren/NSLogger,revile/Teleport-NSLog,GlennAustin/NSLogger,cnbin/NSLogger,rvi/NSLogger,cnbin/NSLogger,Judy-u/NSLogger,poplax/NSLogger,Palleas/NSLogger,253627764/NSLogger,zilaiyedaren/NSLogger,foursquare/NSLogger,cnbin/NSLogger,revile/Teleport-NSLog,Judy-u/NSLogger,rvi/NSLogger,revile/Teleport-NSLog,kennethjiang/Teleport-NSLog,rvi/NSLogger,poplax/NSLogger,GlennAustin/NSLogger,GlennAustin/NSLogger,rvi/NSLogger,zilaiyedaren/NSLogger,FumikoGlover/Teleport,kennethjiang/Teleport-NSLog,Palleas/NSLogger,poplax/NSLogger,FumikoGlover/Teleport,revile/Teleport-NSLog,Judy-u/NSLogger,foursquare/NSLogger,253627764/NSLogger,GlennAustin/NSLogger,LuoLee/NSLogger,LuoLee/NSLogger,LuoLee/NSLogger,foursquare/NSLogger,rvi/NSLogger,foursquare/NSLogger,zilaiyedaren/NSLogger,poplax/NSLogger,revile/Teleport-NSLog,253627764/NSLogger,Judy-u/NSLogger,GlennAustin/NSLogger,foursquare/NSLogger,Palleas/NSLogger,FumikoGlover/Teleport,253627764/NSLogger,kennethjiang/Teleport-NSLog,poplax/NSLogger