Fix playback button

Steps to reproduce:
- Play
- Pause
- Close AudioPlayerActivity
- Open AudioPlayerActivity
- Tap speed button
- Always sets to the one after 1.0

core/src/main/java/de/danoeh/antennapod/core/service/playback/LocalPSMP.java

@@ -639,6 +639,7 @@ public class LocalPSMP extends PlaybackServiceMediaPlayer {
         float retVal = 1;
         if ((playerStatus == PlayerStatus.PLAYING
                 || playerStatus == PlayerStatus.PAUSED
+                || playerStatus == PlayerStatus.INITIALIZED
                 || playerStatus == PlayerStatus.PREPARED) && mediaPlayer.canSetSpeed()) {
             retVal = mediaPlayer.getCurrentSpeedMultiplier();
         }