[Lldb-commits] [lldb] (lldb) Correctly fix a usage of `PATH_MAX` and unit tests (PR #104502)

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royitaqi wrote:

Two changes made:
1. Add typedef `lldb_private::PathSmallString` with initial size 256. Use it in `RealpathPrefixes.cpp`.
2. Fix test errors in Windows (caused by by not specify WindowsSpec vs. PosixSpec).

https://github.com/llvm/llvm-project/pull/104502