Fix build break.

Change-Id: Ica28b1e234e2c6966408efc7151ea517a18aa72f
diff --git a/src/com/android/exchange/adapter/Serializer.java b/src/com/android/exchange/adapter/Serializer.java
index 97b7e6d..bd16909 100644
--- a/src/com/android/exchange/adapter/Serializer.java
+++ b/src/com/android/exchange/adapter/Serializer.java
@@ -38,7 +38,7 @@
 public class Serializer {
 
     private static final String TAG = "Serializer";
-    private final boolean logging = Email.DEBUG && Log.isLoggable(TAG, Log.VERBOSE);
+    private boolean logging = Email.DEBUG && Log.isLoggable(TAG, Log.VERBOSE);
 
     private static final int NOT_PENDING = -1;