[Android] Audio player: add a comment

[Adrien Maglo]

vlc-ports/android | branch: master | Adrien Maglo <magsoft at videolan.org> | Mon Jan 27 21:49:40 2014 +0100| [17d8a5d99378b8180b0323fcf96e8911a03eac7d] | committer: Adrien Maglo

Audio player: add a comment

> http://git.videolan.org/gitweb.cgi/vlc-ports/android.git/?a=commit;h=17d8a5d99378b8180b0323fcf96e8911a03eac7d
---

 vlc-android/res/layout/audio_playlist_item_drag_shadow.xml |    4 ++++
 1 file changed, 4 insertions(+)

diff --git a/vlc-android/res/layout/audio_playlist_item_drag_shadow.xml b/vlc-android/res/layout/audio_playlist_item_drag_shadow.xml
index 80ad745..41b4772 100644
--- a/vlc-android/res/layout/audio_playlist_item_drag_shadow.xml
+++ b/vlc-android/res/layout/audio_playlist_item_drag_shadow.xml
@@ -1,4 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
+<!--
+     This FrameLayout is a workaround to fix the old version android bug
+     that fills the canvas with the color of the root view.
+-->
 <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
     android:layout_height="wrap_content" >