removed warning

git-svn-id: svn://svn.lighttpd.net/lighttpd/branches/lighttpd-merge-1.4.x@988 152afb58-edef-0310-8abb-c4023f1b3aa9

src/mod_staticfile.c

@@ -443,7 +443,7 @@ URIHANDLER_FUNC(mod_staticfile_subrequest) {
 		int do_range_request = 1;
 		/* check if we have a conditional GET */
 
-		if (NULL != (ds = array_get_element(con->request.headers, "If-Range"))) {
+		if (NULL != (ds = (data_string *)array_get_element(con->request.headers, "If-Range"))) {
 			/* if the value is the same as our ETag, we do a Range-request, 
 			 * otherwise a full 200 */