fix: aborts when using a Qt build with assertions enabled

Preventing undefined behaviour hooray! :D

Signed-off-by: flow <flowlnlnln@gmail.com>

launcher/minecraft/mod/ModFolderModel.cpp

@@ -167,6 +167,9 @@ void ModFolderModel::finishUpdate()
     {
         QSet<QString> added = newSet;
         added.subtract(currentSet);
+
+        // When you have a Qt build with assertions turned on, proceeding here will abort the application
+        if (added.size() > 0) {
             beginInsertRows(QModelIndex(), mods.size(), mods.size() + added.size() - 1);
             for (auto& addedMod : added) {
                 mods.append(newMods[addedMod]);
@@ -174,6 +177,7 @@ void ModFolderModel::finishUpdate()
             }
             endInsertRows();
         }
+    }
 
     // update index
     {

launcher/ui/pages/modplatform/ModModel.cpp

@@ -219,6 +219,10 @@ void ListModel::searchRequestFinished(QJsonDocument& doc)
         searchState = CanPossiblyFetchMore;
     }
 
+    // When you have a Qt build with assertions turned on, proceeding here will abort the application
+    if (newList.size() == 0)
+        return;
+
     beginInsertRows(QModelIndex(), modpacks.size(), modpacks.size() + newList.size() - 1);
     modpacks.append(newList);
     endInsertRows();

launcher/ui/pages/modplatform/flame/FlameModel.cpp

@@ -221,6 +221,11 @@ void Flame::ListModel::searchRequestFinished()
         nextSearchOffset += 25;
         searchState = CanPossiblyFetchMore;
     }
+
+    // When you have a Qt build with assertions turned on, proceeding here will abort the application
+    if (newList.size() == 0)
+        return;
+
     beginInsertRows(QModelIndex(), modpacks.size(), modpacks.size() + newList.size() - 1);
     modpacks.append(newList);
     endInsertRows();

launcher/ui/pages/modplatform/modrinth/ModrinthModel.cpp

@@ -290,6 +290,10 @@ void ModpackListModel::searchRequestFinished(QJsonDocument& doc_all)
         searchState = CanPossiblyFetchMore;
     }
 
+    // When you have a Qt build with assertions turned on, proceeding here will abort the application
+    if (newList.size() == 0)
+        return;
+
     beginInsertRows(QModelIndex(), modpacks.size(), modpacks.size() + newList.size() - 1);
     modpacks.append(newList);
     endInsertRows();

launcher/ui/pages/modplatform/technic/TechnicModel.cpp

@@ -217,6 +217,11 @@ void Technic::ListModel::searchRequestFinished()
         return;
     }
     searchState = Finished;
+
+    // When you have a Qt build with assertions turned on, proceeding here will abort the application
+    if (newList.size() == 0)
+        return;
+
     beginInsertRows(QModelIndex(), modpacks.size(), modpacks.size() + newList.size() - 1);
     modpacks.append(newList);
     endInsertRows();