fix for PDT+, topembed, nsbranch+ bug 78857, an assertion caused by the event pool code. r=heikki, sr=jst

content/events/src/nsDOMEvent.cpp

@@ -76,8 +76,10 @@ static char* mEventNames[] = {
   "DOMAttrModified", "DOMCharacterDataModified"
 }; 
 
+/** event pool used as a simple recycler for objects of this class */
+static PRUint8 gEventPool[ sizeof(nsDOMEvent) ];
+
 /* declare static class data */
-nsDOMEvent nsDOMEvent::gEventPool;
 PRBool nsDOMEvent::gEventPoolInUse=PR_FALSE;
 
 #ifdef NS_DEBUG   // metrics for measuring event pool use

content/events/src/nsDOMEvent.h

@@ -223,9 +223,6 @@ protected:
 
   nsDOMEvent() {}; // private constructor for pool, not for general use
 
-  /** event pool used as a simple recycler for objects of this class */
-  static nsDOMEvent gEventPool;
-
   /** bit to say whether the event pool is in use or not.
     * note that it would be trivial to make this a bitmap if we ever
     * wanted to increase the size of the pool from one.  But with our