Propagate warren's OJI-related XP_MAC pragma change from js/src.

js/ref/jsobj.c

@@ -55,6 +55,10 @@ js_DropProperty(JSContext *cx, JSObject *obj, JSProperty *prop);
 #define NATIVE_DROP_PROPERTY NULL
 #endif
 
+#ifdef XP_MAC
+#pragma export on
+#endif
+
 JS_FRIEND_DATA(JSObjectOps) js_ObjectOps = {
     js_NewObjectMap,    js_DestroyObjectMap,
 #if defined JS_THREADSAFE && defined DEBUG
@@ -71,6 +75,10 @@ JS_FRIEND_DATA(JSObjectOps) js_ObjectOps = {
     NULL,               js_HasInstance
 };
 
+#ifdef XP_MAC
+#pragma export off
+#endif
+
 JSClass js_ObjectClass = {
     js_Object_str,
     0,