Initialized properly premanagedVersion

git-svn-id: https://svn.apache.org/repos/asf/maven/shared/trunk@573333 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/src/main/java/org/apache/maven/shared/dependency/tree/DependencyTreeResolutionListener.java b/src/main/java/org/apache/maven/shared/dependency/tree/DependencyTreeResolutionListener.java
index 650ac8b..a59601a 100644
--- a/src/main/java/org/apache/maven/shared/dependency/tree/DependencyTreeResolutionListener.java
+++ b/src/main/java/org/apache/maven/shared/dependency/tree/DependencyTreeResolutionListener.java
@@ -92,7 +92,7 @@
         rootNode = null;
         currentNode = null;
         managedId = null;
-        premanagedScope = null;
+        premanagedVersion = null;
         premanagedScope = null;
     }