Change return type of qHash with Qt 6 to size_t

src/playlist/playlistfilter.cpp

@@ -84,7 +84,11 @@ bool PlaylistFilter::filterAcceptsRow(int row, const QModelIndex &parent) const
   QString filter = filterRegExp().pattern();
 #endif
 
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+  size_t hash = qHash(filter);
+#else
   uint hash = qHash(filter);
+#endif
   if (hash != query_hash_) {
     // Parse the query
     FilterParser p(filter, column_names_, numerical_columns_);

src/playlist/playlistfilter.h

@@ -47,10 +47,14 @@ class PlaylistFilter : public QSortFilterProxyModel {
   // public so Playlist::NextVirtualIndex and friends can get at it
   bool filterAcceptsRow(int source_row, const QModelIndex &source_parent) const override;
 
-private:
+ private:
   // Mutable because they're modified from filterAcceptsRow() const
   mutable QScopedPointer<FilterTree> filter_tree_;
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+  mutable size_t query_hash_;
+#else
   mutable uint query_hash_;
+#endif
 
   QMap<QString, int> column_names_;
   QSet<int> numerical_columns_;