Fix for Empty except

[Andrey1994]

Use a targeted exception handler instead of except: and keep the operation explicitly best-effort.

Best fix (without changing functionality):

• In python_package/brainflow/data_filter.py, inside DataHandlerDLL.__init__, replace:
  • except: + pass
• With:
  • except (AttributeError, OSError): + explanatory comment + pass

Why this is best:

• AttributeError covers environments where os.add_dll_directory is unavailable.
• OSError covers expected runtime failures when adding the directory.
• Behavior remains the same (non-fatal, continue to PATH fallback), but avoids catching unrelated exceptions and satisfies CodeQL’s requirement for meaningful handling/commenting.

No new imports or dependencies are needed.

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