[OBR] Initialize Requirement attributes and directives with empty list.


git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@1591955 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/bundlerepository/src/main/java/org/apache/felix/bundlerepository/impl/RequirementImpl.java b/bundlerepository/src/main/java/org/apache/felix/bundlerepository/impl/RequirementImpl.java
index 593d284..9270aae 100644
--- a/bundlerepository/src/main/java/org/apache/felix/bundlerepository/impl/RequirementImpl.java
+++ b/bundlerepository/src/main/java/org/apache/felix/bundlerepository/impl/RequirementImpl.java
@@ -39,8 +39,8 @@
     private boolean m_optional = false;
     private FilterImpl m_filter = null;
     private String m_comment = null;
-    private Map<String, Object> m_attributes;
-    private Map<String, String> m_directives;
+    private Map<String, Object> m_attributes = Collections.emptyMap();
+    private Map<String, String> m_directives = Collections.emptyMap();
 
     public RequirementImpl()
     {