getopt API uses int as return value
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@ -59,7 +59,7 @@ void process_command_line_arguments(int argc, char **argv)
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{0}
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};
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char c;
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int c;
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int option_index;
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while ((c = getopt_long(argc, argv, "sm:o:ukd:?", long_options, &option_index)) != -1)
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