File libev-werror.patch of Package audit

From: Jan Engelhardt <jengelh@inai.de>
Date: 2021-06-02 16:18:03.256597842 +0200

Cherry-pick http://cvs.schmorp.de/libev/ev_iouring.c?view=log&r1=1.25
to fix some terrible code.

[   50s] ev_iouring.c: In function 'iouring_sqe_submit':
[   50s] ev_iouring.c:300:1: error: no return statement in function returning non-void [-Werror=return-type]

---
 src/libev/ev_iouring.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: audit-3.0.1/src/libev/ev_iouring.c
===================================================================
--- audit-3.0.1.orig/src/libev/ev_iouring.c
+++ audit-3.0.1/src/libev/ev_iouring.c
@@ -287,7 +287,7 @@ iouring_sqe_get (EV_P)
 }
 
 inline_size
-struct io_uring_sqe *
+void
 iouring_sqe_submit (EV_P_ struct io_uring_sqe *sqe)
 {
   unsigned idx = sqe - EV_SQES;