4853 illumos-gate is not lint-clean when built with openssl 1.0

@@ -58,10 +58,11 @@
 
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <errno.h>
+#include <openssl/opensslconf.h>
 #include <openssl/crypto.h>
 #include <openssl/bio.h>
 #include <openssl/err.h>
 #include <openssl/ssl.h>