[MRESOLVER-483] Classpath generation bugfix (addendum)

A nasty bug creeped in: there are two very same methods
returning same thing "usually", but not always.

Use proper method that is also non-null in reality.

maven-resolver-util/src/main/java/org/eclipse/aether/util/graph/visitor/NodeListGenerator.java

@@ -118,8 +118,8 @@ static List<DependencyNode> getNodesWithDependencies(List<DependencyNode> nodes)
 
     static List<Dependency> getDependencies(List<DependencyNode> nodes, boolean includeUnresolved) {
         return getNodesWithDependencies(nodes).stream()
-                .filter(d -> includeUnresolved || d.getArtifact().getFile() != null)
                 .map(DependencyNode::getDependency)
+                .filter(d -> includeUnresolved || d.getArtifact().getFile() != null)
                 .collect(toList());
     }