Adding missing call to set_auto_compaction for cache_db

Author: Edward Houston

src/new_index/schema.rs

@@ -292,6 +292,7 @@ impl Indexer {
         );
         start_fetcher(self.from, &daemon, to_index)?.map(|blocks| self.index(&blocks));
         self.start_auto_compactions(&self.store.history_db);
+        self.start_auto_compactions(&self.store.cache_db);
 
         if let DBFlush::Disable = self.flush {
             debug!("flushing to disk");