Fix issue in perun status

[tfiedor]

This PR fixes minor issue in perun status, when there is profile with .perf extension with incorrect format.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.18%. Comparing base (6a225ff) to head (990c855).

Additional details and impacted files

@@           Coverage Diff           @@
##            devel     #241   +/-   ##
=======================================
  Coverage   99.18%   99.18%           
=======================================
  Files         149      149           
  Lines       10124    10131    +7     
=======================================
+ Hits        10041    10048    +7     
  Misses         83       83           

Flag	Coverage Δ
coverage-3.10	99.18% <100.00%> (+0.01%)	⬆️
coverage-3.11	99.16% <100.00%> (-0.02%)	⬇️
coverage-3.12	?
coverage-3.9	99.17% <100.00%> (+<0.01%)	⬆️

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