Makes sure send file releases resources on close

    PUBLISHED_FROM=451d2dd0b55b9fd7dea441a9279f54d0005c97b1

mongoose.c

@@ -4030,15 +4030,16 @@ static void http_handler(struct mg_connection *nc, int ev, void *ev_data) {
 #ifndef MG_DISABLE_HTTP_WEBSOCKET
   struct mg_str *vec;
 #endif
+  if (ev == MG_EV_CLOSE) {
     /*
      * For HTTP messages without Content-Length, always send HTTP message
      * before MG_EV_CLOSE message.
      */
-  if (ev == MG_EV_CLOSE && io->len > 0 &&
-      mg_parse_http(io->buf, io->len, &hm, is_req) > 0) {
+    if (io->len > 0 && mg_parse_http(io->buf, io->len, &hm, is_req) > 0) {
       hm.message.len = io->len;
       hm.body.len = io->buf + io->len - hm.body.p;
       nc->handler(nc, is_req ? MG_EV_HTTP_REQUEST : MG_EV_HTTP_REPLY, &hm);
+    }
     free_http_proto_data(nc);
   }