Fix #1811 NullPointerException on EdgeTypeFilter

modules/FiltersPlugin/src/main/java/org/gephi/filters/plugin/edge/EdgeTypeBuilder.java

@@ -43,6 +43,7 @@ package org.gephi.filters.plugin.edge;
 
 import java.util.ArrayList;
 import java.util.Collection;
+import java.util.Objects;
 import javax.swing.Icon;
 import javax.swing.JPanel;
 import org.gephi.filters.api.FilterLibrary;
@@ -119,7 +120,7 @@ public class EdgeTypeBuilder implements FilterBuilder {
 
         @Override
         public boolean evaluate(Graph graph, Edge edge) {
-            return type.equals(edge.getType());
+            return Objects.equals(type, edge.getType());
         }
 
         @Override

modules/FiltersPlugin/src/main/nbm/manifest.mf

 Manifest-Version: 1.0
 AutoUpdate-Essential-Module: true
 OpenIDE-Module-Localizing-Bundle: org/gephi/filters/plugin/Bundle.properties
-OpenIDE-Module-Specification-Version: ${gephi.modules.specification.version}
+OpenIDE-Module-Specification-Version: 0.9.2.1
 OpenIDE-Module-Display-Category: Plugin
 OpenIDE-Module-Name: Filters Plugin