Avoid double inclusion on `<mruby.h>`.
MODIFY
src/fmt_fp.c
src/fmt_fp.c
@@ -443,7 +443,6 @@ mrb_float_to_cstr(mrb_state *mrb, char *buf, size_t len, const char *fmt, mrb_fl
return (int)(cstr.buf - buf);
}
#else /* MRB_NO_STDIO || _WIN32 || _WIN64 */
-#include <mruby.h>
#include <stdio.h>
MRB_API mrb_value

Avoid double inclusion on `<mruby.h>`.