From: gmungoc <g.m.carstairs@dundee.ac.uk>
Date: Tue, 7 Apr 2015 08:17:00 +0000 (+0100)
Subject: JAL-1691 defensive check for null
X-Git-Tag: Jalview_2_9~69^2~14
X-Git-Url: http://source.jalview.org/gitweb/?a=commitdiff_plain;h=71881f2cf715e6143cd594e20bd41db538282f81;p=jalview.git

JAL-1691 defensive check for null
---

diff --git a/src/jalview/datamodel/HiddenSequences.java b/src/jalview/datamodel/HiddenSequences.java
index 35e7930..929e56e 100755
--- a/src/jalview/datamodel/HiddenSequences.java
+++ b/src/jalview/datamodel/HiddenSequences.java
@@ -278,11 +278,14 @@ public class HiddenSequences
 
   public boolean isHidden(SequenceI seq)
   {
-    for (int i = 0; i < hiddenSequences.length; i++)
+    if (hiddenSequences != null)
     {
-      if (hiddenSequences[i] != null && hiddenSequences[i] == seq)
+      for (int i = 0; i < hiddenSequences.length; i++)
       {
-        return true;
+        if (hiddenSequences[i] != null && hiddenSequences[i] == seq)
+        {
+          return true;
+        }
       }
     }