Improve check

Kitsune/src/main/java/optic_fusion1/kitsune/tool/impl/IdFetcherTool.java

Line 124 in 28f8890

// TODO: Improve check

            return false;
        }
        byte[] bytes = IOUtils.toByteArray(zipFile.getInputStream(entry));
        // TODO: Improve check
        if (bytes != null && bytes.length >= 2) {
            char c = (char) bytes[0];
            char d = (char) bytes[1];

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