bugfix: added missing SSL feature macro (#211)

Sync from openresty/meta-lua-nginx-module#83

Author: spacewander

src/ngx_stream_lua_ctx.c

@@ -82,7 +82,9 @@ ngx_stream_lua_ffi_get_ctx_ref(ngx_stream_lua_request_t *r, int *in_ssl_phase,
     int *ssl_ctx_ref)
 {
     ngx_stream_lua_ctx_t                    *ctx;
+#if (NGX_STREAM_SSL)
     ngx_stream_lua_ssl_ctx_t                *ssl_ctx;
+#endif
 
     ctx = ngx_stream_lua_get_module_ctx(r, ngx_stream_lua_module);
     if (ctx == NULL) {
@@ -96,13 +98,15 @@ ngx_stream_lua_ffi_get_ctx_ref(ngx_stream_lua_request_t *r, int *in_ssl_phase,
     *in_ssl_phase = ctx->context & NGX_STREAM_LUA_CONTEXT_SSL_CERT;
     *ssl_ctx_ref = LUA_NOREF;
 
+#if (NGX_STREAM_SSL)
     if (r->connection->ssl != NULL) {
         ssl_ctx = ngx_stream_lua_ssl_get_ctx(r->connection->ssl->connection);
 
         if (ssl_ctx != NULL) {
             *ssl_ctx_ref = ssl_ctx->ctx_ref;
         }
     }
+#endif
 
     return LUA_NOREF;
 }
@@ -112,15 +116,18 @@ int
 ngx_stream_lua_ffi_set_ctx_ref(ngx_stream_lua_request_t *r, int ref)
 {
     ngx_pool_t                      *pool;
-    ngx_connection_t                *c;
     ngx_stream_lua_ctx_t            *ctx;
+#if (NGX_STREAM_SSL)
+    ngx_connection_t                *c;
     ngx_stream_lua_ssl_ctx_t        *ssl_ctx;
+#endif
 
     ctx = ngx_stream_lua_get_module_ctx(r, ngx_stream_lua_module);
     if (ctx == NULL) {
         return NGX_STREAM_LUA_FFI_NO_REQ_CTX;
     }
 
+#if (NGX_STREAM_SSL)
     if (ctx->context & NGX_STREAM_LUA_CONTEXT_SSL_CERT) {
         ssl_ctx = ngx_stream_lua_ssl_get_ctx(r->connection->ssl->connection);
         if (ssl_ctx == NULL) {
@@ -135,6 +142,10 @@ ngx_stream_lua_ffi_set_ctx_ref(ngx_stream_lua_request_t *r, int ref)
         pool = r->pool;
     }
 
+#else
+    pool = r->pool;
+#endif
+
     ctx->ctx_ref = ref;
 
     if (ngx_stream_lua_ngx_ctx_add_cleanup(r, pool, ref) != NGX_OK) {