Fix crash caused by assertion when creating a node that only contains a NodeTitleBar

Lib/imnodes-master-b2ec254/imnodes.cpp

@@ -2539,6 +2539,9 @@ void EndNodeTitleBar()
     ImGui::ItemAdd(GetNodeTitleRect(node), ImGui::GetID("title_bar"));
 
     ImGui::SetCursorPos(GridSpaceToEditorSpace(editor, GetNodeContentOrigin(node)));
+
+    // Fix for ImGui::ErrorCheckUsingSetCursorPosToExtendParentBoundaries()
+    ImGui::Dummy(ImVec2(0.0f, 0.0f));
 }
 
 void BeginInputAttribute(const int id, const ImNodesPinShape shape)