Oops, remove extra sigaddset() call. Don't know how that one got there.

libpthread/linuxthreads/pthread.c

@@ -376,7 +376,6 @@ static void pthread_initialize(void)
   sa.sa_flags = 0;
   __libc_sigaction(__pthread_sig_restart, &sa, NULL);
   sa.sa_handler = pthread_handle_sigcancel;
-  sigaddset(&sa.sa_mask, __pthread_sig_restart);
   // sa.sa_flags = 0;
   __libc_sigaction(__pthread_sig_cancel, &sa, NULL);
   if (__pthread_sig_debug > 0) {