Fix a travis failure

Travis was indicating a bogus uninit var warning. This fixes it.

Perl changes reviewed by Richard Levitte. Non-perl changes reviewed by Rich
Salz

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
diff --git a/ssl/statem/statem_clnt.c b/ssl/statem/statem_clnt.c
index 18430ea..35ca8de 100644
--- a/ssl/statem/statem_clnt.c
+++ b/ssl/statem/statem_clnt.c
@@ -1110,6 +1110,7 @@
             goto f_err;
         }
     } else {
+        PACKET_null_init(&session_id);
         session_id_len = 0;
     }