Fix bad scoping in SPPlaylist.
Fix bad scoping in SPPlaylist.

Change-Id: I3142ddaed1d56403a722629800554173ff336c4f

CrowdTunes/cocoalibspotify,CrowdTunes/cocoalibspotify,andyvand/cocoalibspotify,spectralmind/cocoalibspotify,spectralmind/cocoalibspotify,spectralmind/cocoalibspotify,spectralmind/cocoalibspotify,spotify/cocoalibspotify,spotify/cocoalibspotify,andyvand/cocoalibspotify,CrowdTunes/cocoalibspotify,yingwang/Fspot,CrowdTunes/cocoalibspotify,spotify/cocoalibspotify,andyvand/cocoalibspotify,yingwang/Fspot,andyvand/cocoalibspotify,spotify/cocoalibspotify,yingwang/Fspot