Fixes pipes duplication issues

code/ATMOSPHERICS/he_pipes.dm

@@ -35,6 +35,10 @@ obj/machinery/atmospherics/pipe/simple/heat_exchanging
 			if(target.initialize_directions_he & get_dir(target,src))
 				node2 = target
 				break
+		if(!node1 && !node2)
+			del(src)
+			return
+
 		update_icon()
 		return
 
@@ -102,5 +106,9 @@ obj/machinery/atmospherics/pipe/simple/heat_exchanging/junction
 				node2 = target
 				break
 
+		if(!node1&&!node2)
+			del(src)
+			return
+
 		update_icon()
 		return

code/ATMOSPHERICS/pipes.dm

@@ -523,6 +523,10 @@
 			if (node3)
 				break
 
+	if(!node1 && !node2 && !node3)
+		del(src)
+		return
+
 	var/turf/T = get_turf(src)
 	if(istype(T))
 		hide(T.intact)
@@ -720,6 +724,10 @@
 			node4 = target
 			break
 
+	if(!node1 && !node2 && !node3 && !node4)
+		del(src)
+		return
+
 	var/turf/T = get_turf(src)
 	if(istype(T))
 		hide(T.intact)

code/game/machinery/pipe/construction.dm

@@ -390,7 +390,7 @@ Buildable meters
 			M.level = T.intact ? 2 : 1
 			M.initialize()
 			if (!M)
-				usr << "There's nothing to connect this manifold to!" //(with how the pipe code works, at least one end needs to be connected to something, otherwise the game deletes the segment)"
+				usr << pipefailtext
 				return 1
 			M.build_network()
 			if (M.node1)
@@ -413,7 +413,7 @@ Buildable meters
 			M.level = T.intact ? 2 : 1
 			M.initialize()
 			if (!M)
-				usr << "There's nothing to connect this manifold to!" //(with how the pipe code works, at least one end needs to be connected to something, otherwise the game deletes the segment)"
+				usr << pipefailtext
 				return 1
 			M.build_network()
 			if (M.node1)