tidy: modernize-use-equals-default

src/net_processing.h

@@ -76,7 +76,7 @@ public:
     static std::unique_ptr<PeerManager> make(CConnman& connman, AddrMan& addrman,
                                              BanMan* banman, ChainstateManager& chainman,
                                              CTxMemPool& pool, node::Warnings& warnings, Options opts);
-    virtual ~PeerManager() { }
+    virtual ~PeerManager() = default;
 
     /**
      * Attempt to manually fetch block from a given peer. We must already have the header.