X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=org.simantics.plant3d%2Fsrc%2Forg%2Fsimantics%2Fplant3d%2Fscenegraph%2FPipelineComponent.java;h=06944b53517343420418461e68148103aaaaa476;hb=refs%2Fchanges%2F97%2F3097%2F1;hp=36c6dde1b77e0667b50b1f7a6be4cb7f4f395c6f;hpb=9fcc0bba531cd91842769f293b155c99cc5c5937;p=simantics%2F3d.git

diff --git a/org.simantics.plant3d/src/org/simantics/plant3d/scenegraph/PipelineComponent.java b/org.simantics.plant3d/src/org/simantics/plant3d/scenegraph/PipelineComponent.java
index 36c6dde1..06944b53 100644
--- a/org.simantics.plant3d/src/org/simantics/plant3d/scenegraph/PipelineComponent.java
+++ b/org.simantics.plant3d/src/org/simantics/plant3d/scenegraph/PipelineComponent.java
@@ -88,8 +88,8 @@ public abstract class PipelineComponent extends GeometryNode {
 	public void setNext(PipelineComponent comp) {
 		if (next == comp)
 			return;
-		if (comp == null)
-            this.next._removeRef(this);
+		if (this.next != null)
+		    this.next._removeRef(this);
 		this.next = comp;
 		this.syncnext = false;
 		syncNext();
@@ -109,7 +109,7 @@ public abstract class PipelineComponent extends GeometryNode {
 	public void setPrevious(PipelineComponent comp) {
 		if (previous == comp)
 			return;
-		if (comp == null)
+		if (this.previous != null)
 		    this.previous._removeRef(this);
 		this.previous = comp;
 		this.syncprev = false;
@@ -130,8 +130,8 @@ public abstract class PipelineComponent extends GeometryNode {
 	public void setBranch0(PipelineComponent comp) {
 		if (branch0 == comp)
 			return;
-		if (comp == null)
-            this.branch0._removeRef(this);
+		if (this.branch0 != null)
+		    this.branch0._removeRef(this);
 		this.branch0 = comp;
 		this.syncbr0 = false;
 		syncBranch0();