Fix for Hex node type error.

MaterialGraphProject/Assets/Brandon/HexNode.cs

 
         protected override MaterialSlot GetInputSlot1()
         {
-            return new MaterialSlot(InputSlot1Id, GetInputSlot1Name(), kInputSlot1ShaderName, UnityEngine.Graphing.SlotType.Input, SlotValueType.Dynamic, Vector4.zero);
+            return new MaterialSlot(InputSlot1Id, GetInputSlot1Name(), kInputSlot1ShaderName, UnityEngine.Graphing.SlotType.Input, SlotValueType.Vector2, Vector2.zero);
         }
 
         protected override string GetInputSlot2Name()
 
         protected override MaterialSlot GetInputSlot2()
         {
-            return new MaterialSlot(InputSlot2Id, GetInputSlot2Name(), kInputSlot2ShaderName, UnityEngine.Graphing.SlotType.Input, SlotValueType.Vector1, Vector4.zero);
+            return new MaterialSlot(InputSlot2Id, GetInputSlot2Name(), kInputSlot2ShaderName, UnityEngine.Graphing.SlotType.Input, SlotValueType.Vector1, Vector2.zero);
         }
 
         protected override MaterialSlot GetOutputSlot()