Merge "fixing rare NPE" into tm-qpr-dev

                int velocity = (int) mOrientationHandler.getPrimaryVelocity(velocityTracker,

                        mActivePointerId);

                float delta = primaryDirection - mDownMotionPrimary;

                int pageOrientedSize = (int) (mOrientationHandler.getMeasuredSize(

                        getPageAt(mCurrentPage))

                View current = getPageAt(mCurrentPage);

                if (current == null) {

                    Log.e(TAG, "current page was null. this should not happen.");

                    return true;

                }

                int pageOrientedSize = (int) (mOrientationHandler.getMeasuredSize(current)

                        * mOrientationHandler.getPrimaryScale(this));

                boolean isSignificantMove = isSignificantMove(Math.abs(delta), pageOrientedSize);