Fix incorrect condition.

library/src/main/java/com/google/android/exoplayer/MediaCodecVideoTrackRenderer.java

@@ -375,14 +375,16 @@ public class MediaCodecVideoTrackRenderer extends MediaCodecTrackRenderer {
       return true;
     }
 
-    if (getState() == TrackRenderer.STATE_STARTED && earlyUs < 30000) {
+    if (getState() != TrackRenderer.STATE_STARTED) {
+      return false;
+    }
+
     if (Util.SDK_INT >= 21) {
       // Let the underlying framework time the release.
       if (earlyUs < 50000) {
         renderOutputBufferTimedV21(codec, bufferIndex, System.nanoTime() + (earlyUs * 1000L));
         return true;
       }
-        return false;
     } else {
       // We need to time the release ourselves.
       if (earlyUs < 30000) {
@@ -399,8 +401,6 @@ public class MediaCodecVideoTrackRenderer extends MediaCodecTrackRenderer {
         renderOutputBufferImmediate(codec, bufferIndex);
         return true;
       }
-        return false;
-      }
     }
 
     // We're either not playing, or it's not time to render the frame yet.