ftp: add extra buffer length check - #18869
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This adds an extra check that the buffer really has data enough (at least 4 bytes) to check for a status code before doing so. It *should* not be necessary, but this was pointed out by an analyzer and it feels better to make sure.
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This adds an extra check that the buffer really has data enough (at least 4 bytes) to check for a status code before doing so. It should not be necessary, but this was pointed out by an analyzer and it feels better to make sure.