remmove potential NPE in TermNode.toString

diff --git a/cdmlib-commons/src/main/java/eu/etaxonomy/cdm/common/TreeNode.java b/cdmlib-commons/src/main/java/eu/etaxonomy/cdm/common/TreeNode.java
index 61eefa6d7af28c8539be2d029353a962dabb06f0..df41a9b35a20f6afc8d2a6437dfa2fdff94a79fa 100644 (file)
--- a/cdmlib-commons/src/main/java/eu/etaxonomy/cdm/common/TreeNode.java
+++ b/cdmlib-commons/src/main/java/eu/etaxonomy/cdm/common/TreeNode.java
@@ -141,7 +141,8 @@ public class TreeNode<T,S> {
     @Override\r
     public String toString() {\r
         StringBuilder sb = new StringBuilder();\r
-        sb.append("{").append(getData().toString()).append(",[");\r
+\r
+        sb.append("{").append(getData() == null ? "null" : getData().toString()).append(",[");\r
         int i = 0;\r
         for (TreeNode<T,S> e : getChildren()) {\r
             if (i > 0) {\r