Handle false-positive error case

Author: tommyschnabel

beetsplug/badfiles.py

@@ -220,6 +220,9 @@ def on_import_task_before_choice(self, task, session):
             found_error = False
             for error in task._badfiles_checks_failed:
                 for error_line in error:
+                    if 'checker found 0 errors or warnings' in error_line.lower():
+                        continue
+
                     if "warning" in error_line.lower():
                         found_warning = True
                     if "error" in error_line.lower():