FELIX-375 : Fix Preferences.putByteArray() by applying patch from Guillaume Nodet

git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@774660 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/prefs/src/main/java/org/apache/felix/prefs/PreferencesImpl.java b/prefs/src/main/java/org/apache/felix/prefs/PreferencesImpl.java
index b6aea58..ba7420c 100644
--- a/prefs/src/main/java/org/apache/felix/prefs/PreferencesImpl.java
+++ b/prefs/src/main/java/org/apache/felix/prefs/PreferencesImpl.java
@@ -337,7 +337,7 @@
         this.checkKey(key);
         this.checkValue(value);
         try {
-            this.put(key, new String(Base64.decodeBase64(value), "utf-8"));
+            this.put(key, new String(Base64.encodeBase64(value), "utf-8"));
         } catch (UnsupportedEncodingException ignore) {
             // utf-8 is always available
         }