nsICollection's nsQueryElementAt class is exported. r=darin, sr=alec, a=asa, b=158931

xpcom/ds/nsICollection.idl

@@ -63,7 +63,7 @@ interface nsICollection : nsISerializable
 #include "nsCOMPtr.h"
 #endif
 
-class NS_EXPORT nsQueryElementAt : public nsCOMPtr_helper
+class NS_COM nsQueryElementAt : public nsCOMPtr_helper
   {
     public:
       nsQueryElementAt( nsICollection* aCollection, PRUint32 aIndex, nsresult* aErrorPtr )