QueueCommands: make "result" more local

src/command/QueueCommands.cxx

@@ -43,7 +43,6 @@ CommandResult
 handle_add(Client &client, gcc_unused int argc, char *argv[])
 {
 	char *uri = argv[1];
-	PlaylistResult result;
 
 	if (memcmp(uri, "file:///", 8) == 0) {
 		const char *path_utf8 = uri + 7;
@@ -59,7 +58,7 @@ handle_add(Client &client, gcc_unused int argc, char *argv[])
 		if (!client_allow_file(client, path_fs, error))
 			return print_error(client, error);
 
-		result = client.partition.AppendFile(path_utf8);
+		auto result = client.partition.AppendFile(path_utf8);
 		return print_playlist_result(client, result);
 	}
 
@@ -70,7 +69,7 @@ handle_add(Client &client, gcc_unused int argc, char *argv[])
 			return CommandResult::ERROR;
 		}
 
-		result = client.partition.AppendURI(uri);
+		auto result = client.partition.AppendURI(uri);
 		return print_playlist_result(client, result);
 	}