Adding ARRAY_SIZE macro for getting the size of constant arrays.

Change-Id: Ie60744761f5aa434a71a998f5ca98a8f8b1c25d5
Reviewed-on: https://boringssl-review.googlesource.com/10447
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>

ssl/internal.h

diff --git a/ssl/internal.h b/ssl/internal.h
index 6e3a744..092d14b 100644
--- a/ssl/internal.h
+++ b/ssl/internal.h
@@ -148,6 +148,7 @@
 #include <openssl/ssl.h>
 #include <openssl/stack.h>
 
+
 #if defined(OPENSSL_WINDOWS)
 /* Windows defines struct timeval in winsock2.h. */
 OPENSSL_MSVC_PRAGMA(warning(push, 3))