Fix crash:

W/BinderNative(  667): Uncaught exception from death notification
W/BinderNative(  667): java.lang.ArrayIndexOutOfBoundsException: length=0; index=0
W/BinderNative(  667): 	at android.util.ArraySet.valueAt(ArraySet.java:301)
W/BinderNative(  667): 	at com.android.server.am.ActiveServices.killServicesLocked(ActiveServices.java:2069)
W/BinderNative(  667): 	at com.android.server.am.ActivityManagerService.cleanUpApplicationRecordLocked(ActivityManagerService.java:12412)
W/BinderNative(  667): 	at com.android.server.am.ActivityManagerService.handleAppDiedLocked(ActivityManagerService.java:3596)
W/BinderNative(  667): 	at com.android.server.am.ActivityManagerService.appDiedLocked(ActivityManagerService.java:3744)
W/BinderNative(  667): 	at com.android.server.am.ActivityManagerService$AppDeathRecipient.binderDied(ActivityManagerService.java:1024)
W/BinderNative(  667): 	at android.os.BinderProxy.sendDeathNotice(Binder.java:493)
W/BinderNative(  667): 	at dalvik.system.NativeStart.run(Native Method)

Change-Id: I5cd03187dfaa8ec25c7db34ad10e2b6c089c468c