Nico Weber 4f2eeb6a65 Revert "[lldb] Use nullptr instead of 0 or NULL (NFC)"
This reverts commit 24d240558811604354a8d6080405f6bad8d15b5c.
Breaks building on Windows:

    ../../lldb/include\lldb/Host/HostNativeThreadBase.h(49,36): error:
        cannot initialize a member subobject of type 'lldb::thread_result_t'
        (aka 'unsigned int') with an rvalue of type 'std::nullptr_t'
      lldb::thread_result_t m_result = nullptr;
                                       ^~~~~~~
    1 error generated.
2022-01-01 13:35:54 -05:00
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