Fix an NPE issue if state file is empty. (FELIX-902)


git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@738920 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/framework/src/main/java/org/apache/felix/framework/cache/BundleArchive.java b/framework/src/main/java/org/apache/felix/framework/cache/BundleArchive.java
index 8f8551e..cc6bc9c 100644
--- a/framework/src/main/java/org/apache/felix/framework/cache/BundleArchive.java
+++ b/framework/src/main/java/org/apache/felix/framework/cache/BundleArchive.java
@@ -309,11 +309,11 @@
                 .getFileInputStream(stateFile);
             br = new BufferedReader(new InputStreamReader(is));
             String s = br.readLine();
-            if (s.equals(ACTIVE_STATE))
+            if ((s != null) && s.equals(ACTIVE_STATE))
             {
                 m_persistentState = Bundle.ACTIVE;
             }
-            else if (s.equals(UNINSTALLED_STATE))
+            else if ((s != null) && s.equals(UNINSTALLED_STATE))
             {
                 m_persistentState = Bundle.UNINSTALLED;
             }
@@ -343,7 +343,7 @@
     {
         // Write the bundle state.
         OutputStream os = null;
-        BufferedWriter bw= null;
+        BufferedWriter bw = null;
         try
         {
             os = BundleCache.getSecureAction()