Fix issues with global vertices/position on EGP polys (#3357)

* Stop fakepos from creating parent indexes to unparented objects

* Fix improper calls of EGP.GetGlobalVertices

Author: Denneisk

lua/entities/gmod_wire_egp/lib/egplib/parenting.lua

@@ -23,8 +23,7 @@ EGP.ParentingFuncs.addUV = addUV
 local function makeArray( v, fakepos )
 	local ret = {}
 	if isstring(v.verticesindex) then
-		if not fakepos then
-			if (not v["_"..v.verticesindex]) then EGP:AddParentIndexes( v ) end
+		if not fakepos and v["_"..v.verticesindex] then
 			for k,v in ipairs( v["_"..v.verticesindex] ) do
 				ret[#ret+1] = v.x
 				ret[#ret+1] = v.y

lua/entities/gmod_wire_expression2/core/egpfunctions.lua

@@ -853,7 +853,7 @@ end
 e2function array wirelink:egpGlobalVertices( number index )
 	local hasobject, _, object = hasObject(this, index)
 	if hasobject and object.verticesindex then
-		local data = EGP:GetGlobalVertices(object)
+		local data = EGP.GetGlobalVertices(this, object)
 		if data.vertices then
 			local ret = {}
 			for i=1,#data.vertices do

lua/entities/gmod_wire_expression2/core/egpobjects.lua

@@ -588,7 +588,7 @@ end
 e2function array egpobject:globalVertices()
 	if not isValid(this) then return self:throw("Invalid EGP Object", {}) end
 	if this.verticesindex then
-		local data = EGP:GetGlobalVertices(this.EGP, this)
+		local data = EGP.GetGlobalVertices(this.EGP, this)
 		if data.vertices then
 			local ret = {}
 			for i = 1, #data.vertices do