Fix crash when viewing breakdown of nodes in starting Witch area

src/Classes/CalcBreakdownControl.lua

@@ -405,7 +405,7 @@ function CalcBreakdownClass:AddModSection(sectionData, modList)
 			local nodeId = row.mod.source:match("Tree:(%d+)")
 			if nodeId then
 				local nodeIdNumber = tonumber(nodeId)
-				local node = build.spec.nodes[nodeIdNumber] or build.spec.tree.nodes[nodeIdNumber]
+				local node = build.spec.nodes[nodeIdNumber] or build.spec.switchableNodes[nodeIdNumber] or build.spec.tree.nodes[nodeIdNumber]
 				row.sourceName = node.dn
 				row.sourceNameNode = node
 			end

src/Classes/PassiveSpec.lua

@@ -958,6 +958,7 @@ function PassiveSpecClass:BuildAllDependsAndPaths()
 	local visited = { }
 	local attributes = { "Dexterity", "Intelligence", "Strength" }
 	-- Check all nodes for other nodes which depend on them (i.e. are only connected to the tree through that node)
+	self.switchableNodes = { }
 	for id, node in pairs(self.nodes) do
 		node.depends = wipeTable(node.depends)
 		node.intuitiveLeapLikesAffecting = { }
@@ -968,6 +969,7 @@ function PassiveSpecClass:BuildAllDependsAndPaths()
 			local nodeToReplace = self.tree.nodes[id]
 			if self.tree.nodes[id].isSwitchable and self.tree.nodes[id].options[self.curClassName] then
 				nodeToReplace = self.tree.nodes[id].options[self.curClassName]
+				self.switchableNodes[nodeToReplace.id] = node
 			end
 			self:ReplaceNode(node, nodeToReplace)
 		end