we do not need the zero terminated r->uri for a long time

src/http/ngx_http_parse.c

diff --git a/src/http/ngx_http_parse.c b/src/http/ngx_http_parse.c
index bbda9ec..cc9a6f8 100644
--- a/src/http/ngx_http_parse.c
+++ b/src/http/ngx_http_parse.c
@@ -1032,7 +1032,6 @@
 done:
 
     r->uri.len = u - r->uri.data;
-    r->uri.data[r->uri.len] = '\0';
 
     if (r->uri_ext) {
         r->exten.len = u - r->uri_ext;