Check null of pidPair to skip the case the service record has been removed

Check null of pidPair instead of pidPair.first which caused a nullpointer
exception. clean local variables after sending out STATE_OFF intent.
Check bluetooth state in removeServiceRecord.
bug 5330367

Change-Id: Ib0af8143223bea48d3f587cca18544c4aef29980
2 files changed