Fix test cases' bugs in xts suite (1/2) (without dependent commit)
1. Fix trace_marker test case
2. Fix sigchain_intercept_signal test case
3. Fix mknod test case
4. Fix atexit_dlclose test case
5. Fix raise-race test case
6. Fix timer_create, timer_getoverrun, timer_settime timed out
Issue: https://gitee.com/openharmony/third_party_musl/issues/I6Z32OSigned-off-by: zzulilyw <378305181@qq.com>