51a7961e09
Now that `node_intern.hh` is a C++ header, we can use C++ types there. This patch replaces the linked list of dragged links with a vector. Also, the list of drag operator custom data, `nldrag`, doesn't seem to need to be a list at all, so I just made it a unique pointer. Differential Revision: https://developer.blender.org/D13252