fix compile error from commit a12692ec

(temporarily...)

Signed-off-by: Marcel Hibbe <dev@mhibbe.de>

app/src/main/java/com/nextcloud/talk/polls/ui/PollMainDialogFragment.kt

@@ -84,8 +84,7 @@ class PollMainDialogFragment() : DialogFragment() {
     }
 
     private fun showVoteScreen() {
-
-        val contentFragment = PollVoteFragment.newInstance(
+        val contentFragment = PollVoteFragment(
             viewModel,
             roomToken,
             pollId