CalendarBackupWork: upload to configured account, not current account

Signed-off-by: Álvaro Brey <alvaro.brey@nextcloud.com>

app/src/main/java/com/nextcloud/client/jobs/CalendarBackupWork.kt

@@ -53,6 +53,7 @@ class CalendarBackupWork(
         val accountName = inputData.getString(ACCOUNT) ?: ""
         val optionalUser = accountManager.getUser(accountName)
         if (!optionalUser.isPresent || TextUtils.isEmpty(accountName)) { // no account provided
+            Log_OC.d(TAG, "User not present")
             return Result.failure()
         }
         val lastExecution = preferences.calendarLastBackup
@@ -64,7 +65,7 @@ class CalendarBackupWork(
                     applicationContext,
                     calendar,
                     preferences,
-                    accountManager.user
+                    optionalUser.get()
                 ).start()
             }