fixed compile error in OpenBSD

src/nnn.c

@@ -78,12 +78,12 @@
 #endif
 #include <locale.h>
 #include <pwd.h>
+#include <stdio.h>
 #include <readline/history.h>
 #include <readline/readline.h>
 #include <regex.h>
 #include <signal.h>
 #include <stdarg.h>
-#include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <strings.h>