android o null

[iamwindow]

java.lang.RuntimeException: Unable to stop service br.com.safety.locationlistenerhelper.core.LocationService@2cbedd7: java.lang.NullPointerException: Attempt to invoke virtual method 'boolean com.google.android.gms.common.api.GoogleApiClient.isConnected()' on a null object reference
at android.app.ActivityThread.handleStopService(ActivityThread.java:3741)
at android.app.ActivityThread.-wrap28(Unknown Source:0)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1832)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:7002)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:441)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1408)
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'boolean com.google.android.gms.common.api.GoogleApiClient.isConnected()' on a null object reference
at br.com.safety.locationlistenerhelper.core.LocationService.stopLocationUpdates(LocationService.java:143)
at br.com.safety.locationlistenerhelper.core.LocationService.onDestroy(LocationService.java:150)
at android.app.ActivityThread.handleStopService(ActivityThread.java:3723)
at android.app.ActivityThread.-wrap28(Unknown Source:0) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1832) 
at android.os.Handler.dispatchMessage(Handler.java:106) 
at android.os.Looper.loop(Looper.java:164) 
at android.app.ActivityThread.main(ActivityThread.java:7002) 
at java.lang.reflect.Method.invoke(Native Method) 
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:441) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1408) 

[iamwindow]

galaxy 9