Avoid asmap copies in initialization

Author: sipa

src/init.cpp

@@ -1832,8 +1832,8 @@ bool AppInitMain(NodeContext& node)
             InitError(strprintf(_("Could not find or parse specified asmap: '%s'").translated, asmap_path));
             return false;
         }
-        node.connman->SetAsmap(asmap);
         const uint256 asmap_version = SerializeHash(asmap);
+        node.connman->SetAsmap(std::move(asmap));
         LogPrintf("Using asmap version %s for IP bucketing.\n", asmap_version.ToString());
     } else {
         LogPrintf("Using /16 prefix for IP bucketing.\n");

src/net.h

@@ -331,7 +331,7 @@ class CConnman
     */
     int64_t PoissonNextSendInbound(int64_t now, int average_interval_seconds);
 
-    void SetAsmap(std::vector<bool> asmap) { addrman.m_asmap = asmap; }
+    void SetAsmap(std::vector<bool> asmap) { addrman.m_asmap = std::move(asmap); }
 
 private:
     struct ListenSocket {