Use FOLLY_EXPORT for StaticMetaBase::getThreadEntryList()

Summary: Use FOLLY_EXPORT for StaticMetaBase::getThreadEntryList()

Reviewed By: yfeldblum

Differential Revision: D8640044

fbshipit-source-id: 0907af4b091681a986ac2b0e963bc1c5258dd5c1

folly/detail/ThreadLocalDetail.h

@@ -350,7 +350,7 @@ struct StaticMetaBase {
     t->next = t->prev = t;
   }
 
-  static ThreadEntryList* getThreadEntryList();
+  FOLLY_EXPORT static ThreadEntryList* getThreadEntryList();
 
   static void onThreadExit(void* ptr);