audio/player: Fix checking wrong flag

media_player_set_searchable should check searchable flag not browsable.
diff --git a/profiles/audio/player.c b/profiles/audio/player.c
index 465bff5..9d638fc 100644
--- a/profiles/audio/player.c
+++ b/profiles/audio/player.c
@@ -1406,7 +1406,7 @@
 
 void media_player_set_searchable(struct media_player *mp, bool enabled)
 {
-	if (mp->browsable == enabled)
+	if (mp->searchable == enabled)
 		return;
 
 	DBG("%s", enabled ? "true" : "false");