diff --git a/mozilla/xpcom/glue/nsBaseHashtable.h b/mozilla/xpcom/glue/nsBaseHashtable.h
index db5bb32b0d5..7a1fa73e7c1 100644
--- a/mozilla/xpcom/glue/nsBaseHashtable.h
+++ b/mozilla/xpcom/glue/nsBaseHashtable.h
@@ -108,6 +108,13 @@ public:
   PRBool Init(PRUint32 initSize   = PL_DHASH_MIN_SIZE,
               PRBool   threadSafe = PR_FALSE);
 
+  /**
+   * Check whether the table has been initialized.
+   * This function is especially useful for static hashtables.
+   * @return PR_TRUE if the table has been initialized.
+   */
+  PRBool IsInitialized() const { return mTable.entrySize; }
+
   /**
    * retrieve the value for a key.
    * @param aKey the key to retreive
@@ -246,6 +253,7 @@ nsBaseHashtableET<KeyClass,DataType>::~nsBaseHashtableET()
 
 template<class KeyClass,class DataType,class UserDataType>
 nsBaseHashtable<KeyClass,DataType,UserDataType>::nsBaseHashtable()
+  : mLock(nsnull)
 { }
 
 template<class KeyClass,class DataType,class UserDataType>