Don't crash if the current track source encounters a record with no id

This *shouldn't* normally happen, but it's not worth crashing over.

1 files changed, 6 insertions, 3 deletions

diff --git a/src/playlist/source.cpp b/src/playlist/source.cpp
index d51d97ab..7a062bc7 100644
--- a/src/playlist/source.cpp
+++ b/src/playlist/source.cpp
@@ -139,9 +139,12 @@ auto IndexRecordSource::Peek(std::size_t n, std::vector<database::TrackId>* out)
       working_item = 0;
     }
 
-    out->push_back(working_page->values().at(working_item)->track().value());
-    n--;
-    items_added++;
+    auto record = working_page->values().at(working_item);
+    if (record->track()) {
+      out->push_back(record->track().value());
+      n--;
+      items_added++;
+    }
     working_item++;
   }