fix the previous commit
diff --git a/src/core/ngx_open_file_cache.c b/src/core/ngx_open_file_cache.c
index 6bb6fd2..a1692f1 100644
--- a/src/core/ngx_open_file_cache.c
+++ b/src/core/ngx_open_file_cache.c
@@ -411,7 +411,7 @@
 
         cache->current--;
 
-        if (of->fd != NGX_INVALID_FILE) {
+        if (file->fd != NGX_INVALID_FILE) {
             if (ngx_close_file(file->fd) == NGX_FILE_ERROR) {
                 ngx_log_error(NGX_LOG_ALERT, pool->log, ngx_errno,
                               ngx_close_file_n " \"%s\" failed", file->name);