net: get the bind address earlier in CConnman::AcceptConnection()

Call `GetBindAddress()` earlier in `CConnman::AcceptConnection()`. That
is specific to the TCP protocol and makes the code below it reusable for
other protocols, if the caller provides `addr_bind`, retrieved by other
means.

src/net.cpp

@@ -1020,6 +1020,8 @@ void CConnman::AcceptConnection(const ListenSocket& hListenSocket) {
         LogPrintf("Warning: Unknown socket family\n");
     }
 
+    const CAddress addr_bind = GetBindAddress(hSocket);
+
     NetPermissionFlags permissionFlags = NetPermissionFlags::PF_NONE;
     hListenSocket.AddSocketPermissionFlags(permissionFlags);
     AddWhitelistPermissionFlags(permissionFlags, addr);
@@ -1085,7 +1087,6 @@ void CConnman::AcceptConnection(const ListenSocket& hListenSocket) {
 
     NodeId id = GetNewNodeId();
     uint64_t nonce = GetDeterministicRandomizer(RANDOMIZER_ID_LOCALHOSTNONCE).Write(id).Finalize();
-    CAddress addr_bind = GetBindAddress(hSocket);
 
     ServiceFlags nodeServices = nLocalServices;
     if (NetPermissions::HasFlag(permissionFlags, PF_BLOOMFILTER)) {