suppress some benign warnings

app/node/value.cpp

@@ -68,7 +68,8 @@ QString NodeValue::ValueToString(Type data_type, const QVariant &value, bool val
   } else if (data_type == kRational) {
     return value.value<rational>().toString();
   } else if (data_type == kTexture
-             || data_type == kSamples) {
+             || data_type == kSamples
+             || data_type == kNone) {
     // These data types need no XML representation
     return QString();
   } else if (data_type == kInt) {

app/widget/curvewidget/curvewidget.cpp

@@ -220,7 +220,9 @@ void CurveWidget::UpdateBridgeTime(const int64_t &timestamp)
 void CurveWidget::ConnectNode(Node *node, bool connect)
 {
   foreach (const QString& input, node->inputs()) {
-    ConnectInput(node, input, connect);
+    if (node->IsInputKeyframable(input)) {
+      ConnectInput(node, input, connect);
+    }
   }
 
   // Connect add/remove signals

app/widget/nodetableview/nodetableview.cpp

@@ -140,6 +140,14 @@ void NodeTableView::SetTime(const rational &time)
         sub_item->setText(1, source_name);
 
         switch (value.type()) {
+        case NodeValue::kVideoParams:
+        case NodeValue::kAudioParams:
+        case NodeValue::kFootageJob:
+        case NodeValue::kShaderJob:
+        case NodeValue::kSampleJob:
+        case NodeValue::kGenerateJob:
+          // These types have no string representation
+          break;
         case NodeValue::kTexture:
         {
           // NodeTableTraverser puts video params in here