Remove UncaughtExceptionHandler from CameraController in stopImmediately (#92)

* Fixes #90 Remove UncaughtExceptionHandler from CameraController in stopImmediately

* Move setUncaughtExceptionHandler(null) before onStop()

cameraview/src/main/java/com/otaliastudios/cameraview/CameraController.java

@@ -144,6 +144,8 @@ abstract class CameraController implements CameraPreview.SurfaceCallback {
             // Don't check, try stop again.
             LOG.i("Stop immediately. State was:", ss());
             mState = STATE_STOPPING;
+            // Prevent leaking CameraController.
+            mHandler.getThread().setUncaughtExceptionHandler(null);
             onStop();
             mState = STATE_STOPPED;
             LOG.i("Stop immediately. Stopped. State is:", ss());