[Android] Browser: clear eventlistener in background

[Geoffrey Métais]

vlc-android | branch: master | Geoffrey Métais <gmetais at deezer.com> | Tue Feb  9 21:38:10 2021 +0100| [2f58ae8dde004feb27c7760f271f80aab6e6ecfb] | committer: Nicolas Pomepuy

Browser: clear eventlistener in background

mediabrowser.changeEventListener calls reset() which can lead to block
the current thread

> https://code.videolan.org/videolan/vlc-android/commit/2f58ae8dde004feb27c7760f271f80aab6e6ecfb
---

 .../vlc-android/src/org/videolan/vlc/providers/BrowserProvider.kt     | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/application/vlc-android/src/org/videolan/vlc/providers/BrowserProvider.kt b/application/vlc-android/src/org/videolan/vlc/providers/BrowserProvider.kt
index f5a275899..8e6111ded 100644
--- a/application/vlc-android/src/org/videolan/vlc/providers/BrowserProvider.kt
+++ b/application/vlc-android/src/org/videolan/vlc/providers/BrowserProvider.kt
@@ -205,7 +205,9 @@ abstract class BrowserProvider(val context: Context, val dataset: LiveDataset<Me
             override fun onMediaRemoved(index: Int, media: IMedia) {}
         }
         requestBrowsing(url, listener, interact)
-        awaitClose { if (url != null) mediabrowser?.changeEventListener(null) }
+        awaitClose { if (url != null) AppScope.launch(coroutineContextProvider.IO) {
+            mediabrowser?.changeEventListener(null) }
+        }
     }.buffer(Channel.UNLIMITED)
 
     open fun addMedia(media: MediaLibraryItem) {