playlist: Simplify playlist modified detection

Any modifications to the playlist (insert, delete, shuffle, etc)
will cause the modified flag to be set. The flag is cleared when
the playlist is saved. Code that generates playlists can manually
clear the modified flag if appropriate; there is now a proper API
for this so the tagcache and pictureflow don't need to resort to
hacks.

Change-Id: I8d3c723265a41db07a13de3f1d2abb0444528d57

1 files changed, 1 insertions, 0 deletions

diff --git a/apps/playlist_viewer.c b/apps/playlist_viewer.c
index 4328a6de1d..8761f0dbc9 100644
--- a/apps/playlist_viewer.c
+++ b/apps/playlist_viewer.c
@@ -975,6 +975,7 @@ enum playlist_viewer_result playlist_viewer_ex(const char* filename,
                     if (global_settings.playlist_shuffle)
                         start_index = playlist_shuffle(current_tick, start_index);
                     playlist_start(start_index, 0, 0);
+                    playlist_set_modified(NULL, false);
 
                     if (viewer.initial_selection)
                         *(viewer.initial_selection) = viewer.selected_track;