Fix SQL errors

While trying to find out why a newly added SeriesPart won't get selected
programmatically, I discovered a not so serious SQL bug.
MappingTableModel::addMapping happily tries to execute queries with an
invalid seriesPartId. Return if seriesPartId = -1.

Now all items expanded previously will be expanded after adding a new
movie. (SeriesTreeWidgetT::seriesAdded). Unfortunately the original
problem remains unsolved...

1 files changed, 3 insertions, 0 deletions

diff --git a/mappingtablemodel.cpp b/mappingtablemodel.cpp
index bcb601e..65221e4 100644
--- a/mappingtablemodel.cpp
+++ b/mappingtablemodel.cpp
@@ -163,6 +163,9 @@ bool MappingTableModel::removeItem(const QModelIndex &idx){
 }
 
 bool MappingTableModel::addMapping(int seriesPartId, int itemId){
+	if(seriesPartId == -1){
+		return false;
+	}
 	mDb.transaction();
 	mAddMappingQuery->bindValue(":id1", seriesPartId);
 	mAddMappingQuery->bindValue(":id2", itemId);