Update util/compare_test_results.py

Co-authored-by: Daniel Hofstetter <daniel.hofstetter@42dh.com>

Author: sylvestre

util/compare_test_results.py

@@ -61,7 +61,7 @@ def identify_test_changes(current_flat, reference_flat):
     # Find fixes (tests that were failing but now passing)
     fixes = []
     for test_path, status in reference_flat.items():
-        if status == "FAIL" or status == "ERROR":
+        if status in ("FAIL", "ERROR"):
             if test_path in current_flat:
                 if current_flat[test_path] == "PASS":
                     fixes.append(test_path)