sbattach: fix missing openssl/evp.h header

sbattach.c was generating a warning on compile:

../sbattach.c: In function ‘main’:
../sbattach.c:247:2: warning: implicit declaration of function ‘OpenSSL_add_all_digests’ [-Wimplicit-function-declaration]

OpenSSL_add_all_digests is defined in evp.h, so add the #include.

Signed-off-by: Jeremy Kerr <jeremy.kerr@canonical.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/sbattach.c b/sbattach.c
index 3d565f1..4110dc1 100644
--- a/sbattach.c
+++ b/sbattach.c
@@ -45,6 +45,7 @@
 #include <getopt.h>
 
 #include <openssl/pkcs7.h>
+#include <openssl/evp.h>
 #include <openssl/err.h>
 
 #include <ccan/talloc/talloc.h>