deps: back port OpenBSD fix in c-ares/c-ares

Original PR: https://github.com/c-ares/c-ares/pull/68

PR-URL: https://github.com/nodejs/node/pull/9232
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Johan Bergström <bugs@bergstroem.nu>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>

deps/cares/include/ares.h

@@ -39,7 +39,7 @@ typedef unsigned ares_socklen_t;
    require it! */
 #if defined(_AIX) || defined(__NOVELL_LIBC__) || defined(__NetBSD__) || \
     defined(__minix) || defined(__SYMBIAN32__) || defined(__INTEGRITY) || \
-    defined(ANDROID) || defined(__ANDROID__)
+    defined(ANDROID) || defined(__ANDROID__) || defined(__OpenBSD__)
 #include <sys/select.h>
 #endif
 #if (defined(NETWARE) && !defined(__NOVELL_LIBC__))