Small fix for cloning

josemduarte · josemduarte · commit b2555f63ae6b · 2017-10-09T11:30:54.000-07:00
diff --git a/biojava-structure/src/main/java/org/biojava/nbio/structure/ChainImpl.java b/biojava-structure/src/main/java/org/biojava/nbio/structure/ChainImpl.java
@@ -187,8 +187,10 @@ public Object clone() {
 
 			for (Group seqResGroup : seqResGroups) {
 
-				if (seqResGroup==null)
+				if (seqResGroup==null) {
+					tmpSeqRes.add(null);
 					continue;
+				}
 
 				int i = groups.indexOf(seqResGroup);
 
