fix token retrieval at first sync

bot.ps1

@@ -432,13 +432,12 @@ function Get-FilterId {
     return $filter_id
 }
 function Start-MatrixSync {
-    #get last used next_batch from account_data
-    $token = Get-NextBatchToken
-
     #get /sync filter
     $filter_id = Get-FilterId
 
     Try {
+        #get last used next_batch from account_data
+        $token = Get-NextBatchToken
         #try first sync with the old token
         $token = Invoke-MatrixSync -Token $token -FilterId $filter_id
     } Catch {
@@ -447,9 +446,9 @@ function Start-MatrixSync {
     }
 
     while($true) {
+        $token = Invoke-MatrixSync -Token $token -FilterId $filter_id
         #use $token of the previous sync
         Set-NextBatchToken -Token $token
-        $token = Invoke-MatrixSync -Token $token -FilterId $filter_id
     }
 }