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JAL-2778 Reduced calculation load for overview box
[jalview.git]
/
src
/
jalview
/
viewmodel
/
AlignmentViewport.java
diff --git
a/src/jalview/viewmodel/AlignmentViewport.java
b/src/jalview/viewmodel/AlignmentViewport.java
index
fdad0ce
..
a0cbff4
100644
(file)
--- a/
src/jalview/viewmodel/AlignmentViewport.java
+++ b/
src/jalview/viewmodel/AlignmentViewport.java
@@
-1338,7
+1338,10
@@
public abstract class AlignmentViewport
public void removePropertyChangeListener(
java.beans.PropertyChangeListener listener)
{
- changeSupport.removePropertyChangeListener(listener);
+ if (changeSupport != null)
+ {
+ changeSupport.removePropertyChangeListener(listener);
+ }
}
/**