fix(wl): add missing header for non-glibc after ee5bf81

como/xwl/socket.cpp:124:9: error: use of undeclared identifier 'close'
        close(fd);
        ^
como/xwl/socket.cpp:129:9: error: use of undeclared identifier 'close'
        close(fd);
        ^
como/xwl/socket.cpp:155:44: error: use of undeclared identifier 'getuid'
    if (info.st_uid != 0 && info.st_uid != getuid()) {
                                           ^
como/xwl/socket.cpp:184:17: error: use of undeclared identifier 'close'
                close(fd);
                ^
como/xwl/socket.cpp:223:9: error: use of undeclared identifier 'close'
        close(fd);
        ^

como/xwl/socket.cpp

@@ -14,6 +14,7 @@ SPDX-License-Identifier: GPL-2.0-or-later
 #include <sys/socket.h>
 #include <sys/stat.h>
 #include <sys/un.h>
+#include <unistd.h>
 
 namespace como::xwl
 {