Don't initialize the widget without a calendar permission

package com.android.calendar.widget;

import android.Manifest;

import android.app.AlarmManager;

import android.app.PendingIntent;

import android.appwidget.AppWidgetManager;

import android.content.CursorLoader;

import android.content.Intent;

import android.content.Loader;

import android.content.pm.PackageManager;

import android.content.res.Resources;

import android.database.Cursor;

import android.database.MatrixCursor;

import android.provider.CalendarContract.Attendees;

import android.provider.CalendarContract.Calendars;

import android.provider.CalendarContract.Instances;

import android.support.v4.content.ContextCompat;

import android.text.format.DateUtils;

import android.text.format.Time;

import android.util.Log;

        }

        @Override

        public void onReceive(Context context, Intent intent) {

        public void onReceive(final Context context, Intent intent) {

            if (LOGD)

                Log.d(TAG, "AppWidgetService received an intent. It was " + intent.toString());

            mContext = context;

                        mHandler.post(new Runnable() {

                            @Override

                            public void run() {

                                if (ContextCompat.checkSelfPermission(context, Manifest.permission.READ_CALENDAR) != PackageManager.PERMISSION_GRANTED) {

                                    return;

                                }

                                initLoader(selection);

                                result.finish();

                            }