diff --git a/src/os/unix/ngx_files.c b/src/os/unix/ngx_files.c
index e67b2ca..f8f98c7 100644
--- a/src/os/unix/ngx_files.c
+++ b/src/os/unix/ngx_files.c
@@ -131,7 +131,6 @@
     u_char        *prev;
     size_t         size;
     ssize_t        n;
-    ngx_err_t      err;
     ngx_array_t    vec;
     struct iovec  *iov, iovs[NGX_IOVS];
 
@@ -162,7 +161,8 @@
                 iov->iov_len += cl->buf->last - cl->buf->pos;
 
             } else {
-                if (!(iov = ngx_array_push(&vec))) {
+                iov = ngx_array_push(&vec);
+                if (iov == NULL) {
                     return NGX_ERROR;
                 }