message: [LLDB] Fix FreeBSD build
  The auxiliary vector method had the wrong signature.
  Reviewers: MaskRay, teemperor, aadsm
diff: @@ -127,7 +127,7 @@ public:
  size_t PutSTDIN(const char *buf, size_t len,
  lldb_private::Status &error) override;
  - const lldb_private::DataExtractor GetAuxvData() override;
  + lldb_private::DataExtractor GetAuxvData() override;
  // ProcessFreeBSD internal API.
  