fix building by msvc introduced by r1807

src/http/ngx_http_core_module.c

diff --git a/src/http/ngx_http_core_module.c b/src/http/ngx_http_core_module.c
index c8266a3..5e2f2d3 100644
--- a/src/http/ngx_http_core_module.c
+++ b/src/http/ngx_http_core_module.c
@@ -2692,7 +2692,7 @@
     lcf->client_max_body_size = NGX_CONF_UNSET;
     lcf->client_body_buffer_size = NGX_CONF_UNSET_SIZE;
     lcf->client_body_timeout = NGX_CONF_UNSET_MSEC;
-    lcf->satisfy = NGX_CONF_UNSET;
+    lcf->satisfy = NGX_CONF_UNSET_UINT;
     lcf->internal = NGX_CONF_UNSET;
     lcf->client_body_in_file_only = NGX_CONF_UNSET;
     lcf->sendfile = NGX_CONF_UNSET;