message: util: Add missing rseq to syscall sandbox
  Fixes
diff: @@ -68,6 +68,10 @@ bool g_syscall_sandbox_log_violation_before_terminating{false};
  #define __NR_copy_file_range 326
  #endif
  +#ifndef __NR_rseq
  +#define __NR_rseq 334
  +#endif
  +
  // This list of syscalls in LINUX_SYSCALLS is only used to map syscall numbers to syscall names in
  // order to be able to print user friendly error messages which include the syscall name in addition
  // to the syscall number.
  @@ -327,6 +331,7 @@ const std::map<uint32_t, std::string> LINUX_SYSCALLS{
  {__NR_request_key, "request_key"},
  {__NR_restart_syscall, "restart_syscall"},
  {__NR_rmdir, "rmdir"},
  + {__NR_rseq, "rseq"},
  {__NR_rt_sigaction, "rt_sigaction"},
  {__NR_rt_sigpending, "rt_sigpending"},
  {__NR_rt_sigprocmask, "rt_sigprocmask"},
  @@ -723,6 +728,7 @@ public:
  allowed_syscalls.insert(__NR_fork); // create a child process
  allowed_syscalls.insert(__NR_tgkill); // send a signal to a thread
  allowed_syscalls.insert(__NR_wait4); // wait for process to change state, BSD style
  + allowed_syscalls.insert(__NR_rseq); // register restartable sequence for thread
  }
  void AllowScheduling()
  