Add cctype header (#656)

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mi01 authored and GitHub committed 2020-09-16 16:32:49 -04:00
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@@ -196,6 +196,7 @@ using socket_t = int;
#include <string>
#include <sys/stat.h>
#include <thread>
#include <cctype>
#ifdef CPPHTTPLIB_OPENSSL_SUPPORT
#include <openssl/err.h>