Set SSL session context for "ssl_session_cache none".
This fixes a bug when client certficate is used and nginx closes connection
with the message: "SSL_GET_PREV_SESSION:session id context uninitialized".
diff --git a/src/event/ngx_event_openssl.c b/src/event/ngx_event_openssl.c
index b8886fc..134b361 100644
--- a/src/event/ngx_event_openssl.c
+++ b/src/event/ngx_event_openssl.c
@@ -1428,6 +1428,8 @@
         return NGX_OK;
     }
 
+    SSL_CTX_set_session_id_context(ssl->ctx, sess_ctx->data, sess_ctx->len);
+
     if (builtin_session_cache == NGX_SSL_NONE_SCACHE) {
 
         /*
@@ -1459,8 +1461,6 @@
 
     SSL_CTX_set_session_cache_mode(ssl->ctx, cache_mode);
 
-    SSL_CTX_set_session_id_context(ssl->ctx, sess_ctx->data, sess_ctx->len);
-
     if (builtin_session_cache != NGX_SSL_NO_BUILTIN_SCACHE) {
 
         if (builtin_session_cache != NGX_SSL_DFLT_BUILTIN_SCACHE) {