Protect scrobbler_shutdown against multiple invocations, preventing double unregister of ata_idle callback. Probable fix for FS#8993 - Freeze on shutting down.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@17533 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 3 insertions, 0 deletions

diff --git a/apps/scrobbler.c b/apps/scrobbler.c
index f05bbdb1f4..c109439263 100644
--- a/apps/scrobbler.c
+++ b/apps/scrobbler.c
@@ -251,7 +251,10 @@ void scrobbler_shutdown(void)
 {
 #ifndef SIMULATOR
     if (scrobbler_ata_callback)
+    {
         unregister_ata_idle_func(scrobbler_flush_callback, false);
+        scrobbler_ata_callback = false;
+    }
 #endif
 
     scrobbler_flush_cache();