Compiler fix for Linux gcc 4.7+

indra/llcommon/lleventcoro.h

@@ -123,15 +123,15 @@ namespace LLEventDetail
      * that's okay, since it won't collide with any listener name used by the
      * earlier coroutine since that earlier coroutine no longer exists.
      */
+    /// Implementation for listenerNameForCoro()
+    LL_COMMON_API std::string listenerNameForCoroImpl(const void* self_id);
+
     template <typename COROUTINE_SELF>
     std::string listenerNameForCoro(COROUTINE_SELF& self)
     {
         return listenerNameForCoroImpl(self.get_id());
     }
 
-    /// Implementation for listenerNameForCoro()
-    LL_COMMON_API std::string listenerNameForCoroImpl(const void* self_id);
-
     /**
      * Implement behavior described for postAndWait()'s @a replyPumpNamePath
      * parameter: