Minor cleanup

app/src/main/java/eu/kanade/tachiyomi/data/backup/BackupRestoreService.kt

@@ -69,14 +69,14 @@ class BackupRestoreService : Service() {
      */
     private lateinit var wakeLock: PowerManager.WakeLock
 
-    private lateinit var ioScope: CoroutineScope
+    private lateinit var scope: CoroutineScope
     private var restorer: BackupRestorer? = null
     private lateinit var notifier: BackupNotifier
 
     override fun onCreate() {
         super.onCreate()
 
-        ioScope = CoroutineScope(SupervisorJob() + Dispatchers.IO)
+        scope = CoroutineScope(SupervisorJob() + Dispatchers.IO)
         notifier = BackupNotifier(this)
         wakeLock = acquireWakeLock(javaClass.name)
 
@@ -95,7 +95,7 @@ class BackupRestoreService : Service() {
 
     private fun destroyJob() {
         restorer?.job?.cancel()
-        ioScope.cancel()
+        scope.cancel()
         if (wakeLock.isHeld) {
             wakeLock.release()
         }
@@ -129,7 +129,7 @@ class BackupRestoreService : Service() {
             notifier.showRestoreError(exception.message)
             stopSelf(startId)
         }
-        val job = ioScope.launch(handler) {
+        val job = scope.launch(handler) {
             if (restorer?.restoreBackup(uri) == false) {
                 notifier.showRestoreError(getString(R.string.restoring_backup_canceled))
             }