get rid of null string reference
Merge pull request #5 from gs2usr/cm-10.1

get rid of null string reference
Update QuickSettings
Change-Id: I2da8d9b538cc58f570006c184c9478eae4c9db38
Revert "Update QuickSettings"

This reverts commit f121a3ad4dd166d338838854f6d5680bc800c4fe.