bug 1087498 - ifdef out debug only code r=davidb

accessible/ipc/DocAccessibleParent.cpp

@@ -43,10 +43,12 @@ DocAccessibleParent::RecvShowEvent(const ShowEventData& aData)
 
   uint32_t consumed = AddSubtree(parent, aData.NewTree(), 0, newChildIdx);
   MOZ_ASSERT(consumed == aData.NewTree().Length());
+#ifdef DEBUG
   for (uint32_t i = 0; i < consumed; i++) {
     uint64_t id = aData.NewTree()[i].ID();
     MOZ_ASSERT(mAccessibles.GetEntry(id));
   }
+#endif
 
   return consumed;
 }