[UNIKRAFT PATCH,v2,15/15] lib/ukring: Fix unitialized variable

[Alexander Jung <a.jung@xxxxxxxxxxx>]

This fix introduces the `ret` variable within the
`uk_ring_peek_clear_single` function when compiled with ukdebug.

Signed-off-by: Alexander Jung <alexander.jung@xxxxxxxxx>
---
 lib/ukring/include/uk/ring.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/ukring/include/uk/ring.h b/lib/ukring/include/uk/ring.h
index 49f9dfe..af113b4 100644
--- a/lib/ukring/include/uk/ring.h
+++ b/lib/ukring/include/uk/ring.h
@@ -372,8 +372,10 @@ uk_ring_peek(struct uk_ring *r)
 static __inline void *
 uk_ring_peek_clear_single(struct uk_ring *r)
 {
-#ifdef CONFIG_LIBUKDEBUG_PRINTK_CRIT
+#ifdef CONFIG_LIBUKDEBUG
   void *ret;
+#endif /* CONFIG_LIBUKDEBUG */
+#ifdef CONFIG_LIBUKDEBUG_PRINTK_CRIT
 
   if (!uk_mutex_is_locked(r->lock))
     uk_pr_crit("lock not held on single consumer dequeue\n");
-- 
2.20.1