compile error with NodeState

[Lishen1]

class NodeState have no dll interface.

/// Contains vectors of connected input and output connections.
/// Stores bool for reacting on hovering connections
class  NodeState
{
public:

instead of

/// Contains vectors of connected input and output connections.
/// Stores bool for reacting on hovering connections
class NODE_EDITOR_PUBLIC NodeState
{
public:

so, this class is unusable in library.

[paceholder]

Thanks. I pushed the fix.