tree 92526fd1d2bcf08772393e58d06e307cca6f9ec6
parent 25dd94805c165ce2b1966183355853273ef7657e
author Zhihai Xu <zhihaixu@google.com> 1385061807 -0800
committer Jay Shrauner <shrauner@google.com> 1393737584 +0000

NPE in BluetoothPhoneService.java when switch users.

The null pointer is the mBluetoothHeadset is reset to NULL
when the  the headset profile is disconnected during user switch.
The fix should be  to check the null pointer before access mBluetoothHeadset
also fix all the potential NPE problems not just this one happened.

bug:11804919
Change-Id: I2acd0092179fa07293f9fcc4c9b65f1c3343a37c
(cherry picked from commit b19f55ba5a568a7399d8dd982007264287f6470c)