fix: do not pollute stdout JSON with messages#1626
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The message "No errors or warnings detected." was printed to `stdout` even when EPUBCheck was configured to print a JSON report to `stdout``, why caused the JSON output to be invalid. This commit fixes that by checking that JSON (or XML/XMP) is not being printed to `stdout` before writing this message. Fixes #1603
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The message "No errors or warnings detected." was printed to
stdouteven when EPUBCheck was configured to print a JSON report tostdout``, why caused the JSON output to be invalid. This commit fixes that by checking that JSON (or XML/XMP) is not being printed tostdout` before writing this message.Fixes #1603