Bug 519944 - Memory Leak MessageConsole

Change-Id: Id20cc49810424a35436fca1b9046e6b40928b791
Signed-off-by:  Lars Neumeier <lneumeier@irotation.de>
diff --git a/org.eclipse.ui.console/src/org/eclipse/ui/console/IOConsoleOutputStream.java b/org.eclipse.ui.console/src/org/eclipse/ui/console/IOConsoleOutputStream.java
index 6f9c559..e2b6b3c 100644
--- a/org.eclipse.ui.console/src/org/eclipse/ui/console/IOConsoleOutputStream.java
+++ b/org.eclipse.ui.console/src/org/eclipse/ui/console/IOConsoleOutputStream.java
@@ -181,6 +181,7 @@
         console.streamClosed(this);
         closed = true;
         partitioner = null;
+		decoder = null;
     }
 
     /*