dht: increase max hashes to 1G

include/opendht/dht.h

@@ -343,7 +343,7 @@ private:
     static constexpr unsigned LISTEN_NODES {4};
 
     /* The maximum number of hashes we're willing to track. */
-    static constexpr unsigned MAX_HASHES {1024 * 1024};
+    static constexpr unsigned MAX_HASHES {1024 * 1024 * 1024};
 
     /* The maximum number of searches we keep data about. */
     static constexpr unsigned MAX_SEARCHES {1024 * 1024};