Fix double close fd for lldb-server · Pull Request !633 · OpenHarmony/third_party_llvm-project

### Issue
https://gitee.com/openharmony/third_party_llvm-project/issues/IB97T4
lldb-server would close the same fd twice before excute the binary executable file, which caused error.

### Reason (Purpose, Solved Problem)
the code is edited to prevent double close.

### Description
Original code includes a for loop that iterate through the proc/self/fd directory, and after iteration,
the proc/self/fd would be closed by default. While next the code tries to close all the fd one by one, includes
proc/self/fd, which caused the double close.

So the code is edited to check if the fd is linked to proc/pid_number/fd. So first we get the pid number of the procss,  we use a function to check the path that the fd points to, compare it with "proc/pidnumber/fd", and if the path is the same as "proc/pidnumber/fd", we continue and not push the fd into the close line.

### Test (Local test)
![successfully execute the file](https://foruda.gitee.com/images/1733387941416169807/3de474dd_14833253.png "屏幕截图")

### Need to cherry-pick to release (eg：monthly_20221018, OpenHarmony-3.2-Beta5 ...) branch？

- [ ] yes，branch list:
- [x] no

why:

###  Compatibility impact assessment, please indicate (Y/N) N

类型	指派人员	状态
审查	hhj Pavel Kosov	进行中 (0/1人)
测试	openharmony_ci 已测试通过	已完成 (1/1人)

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