tree-wide: some O_NDELAY → O_NONBLOCK fixes

Somehow the coccinelle script misses these, hence fix them manually.

src/nspawn/nspawn.c

@@ -1952,7 +1952,7 @@ static int setup_kmsg(int kmsg_socket) {
         if (r < 0)
                 return r;
 
-        fd = open(from, O_RDWR|O_NDELAY|O_CLOEXEC);
+        fd = open(from, O_RDWR|O_NONBLOCK|O_CLOEXEC);
         if (fd < 0)
                 return log_error_errno(errno, "Failed to open fifo: %m");
 
@@ -4478,7 +4478,7 @@ int main(int argc, char *argv[]) {
                 isatty(STDIN_FILENO) > 0 &&
                 isatty(STDOUT_FILENO) > 0;
 
-        master = posix_openpt(O_RDWR|O_NOCTTY|O_CLOEXEC|O_NDELAY);
+        master = posix_openpt(O_RDWR|O_NOCTTY|O_CLOEXEC|O_NONBLOCK);
         if (master < 0) {
                 r = log_error_errno(errno, "Failed to acquire pseudo tty: %m");
                 goto finish;