Memcached: enabled ranges.

src/http/modules/ngx_http_memcached_module.c

diff --git a/src/http/modules/ngx_http_memcached_module.c b/src/http/modules/ngx_http_memcached_module.c
index 17f1d8e..8341b92 100644
--- a/src/http/modules/ngx_http_memcached_module.c
+++ b/src/http/modules/ngx_http_memcached_module.c
@@ -618,6 +618,7 @@
     conf->upstream.intercept_404 = 1;
     conf->upstream.pass_request_headers = 0;
     conf->upstream.pass_request_body = 0;
+    conf->upstream.force_ranges = 1;
 
     conf->index = NGX_CONF_UNSET;
     conf->gzip_flag = NGX_CONF_UNSET_UINT;