From c0d16ea2cb523d28477385ef6d6b619c21f77d1e Mon Sep 17 00:00:00 2001
From: tonihei <tonihei@google.com>
Date: Wed, 10 May 2017 09:18:01 -0700
Subject: [PATCH] Possible NullPointerException in
 ExoPlayerImplInternal.setRepeatModeInternal

When readingPeriodHolder and playingPeriodHolder are both null, a
NullPointerException is thrown when trying to reassign readingPeriodHolder.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=155635846
---
 .../com/google/android/exoplayer2/ExoPlayerImplInternal.java    | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/library/core/src/main/java/com/google/android/exoplayer2/ExoPlayerImplInternal.java b/library/core/src/main/java/com/google/android/exoplayer2/ExoPlayerImplInternal.java
index d6fa17c171..45ff639d24 100644
--- a/library/core/src/main/java/com/google/android/exoplayer2/ExoPlayerImplInternal.java
+++ b/library/core/src/main/java/com/google/android/exoplayer2/ExoPlayerImplInternal.java
@@ -454,7 +454,7 @@ import java.io.IOException;
     if (!seenLoadingPeriodHolder) {
       loadingPeriodHolder = lastValidPeriodHolder;
     }
-    if (!seenReadingPeriodHolder) {
+    if (!seenReadingPeriodHolder && playingPeriodHolder != null) {
       // Renderers may have read from a period that's been removed. Seek back to the current
       // position of the playing period to make sure none of the removed period is played.
       int playingPeriodIndex = playingPeriodHolder.index;