fix -Werror build

bcb49750 · Nikita Malyavin · 8b0101a8 · bcb49750
Commit bcb49750 authored Jun 30, 2023 by Nikita Malyavin
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sql/log.h sql/log.h +2 -1

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--- a/sql/log.h
+++ b/sql/log.h
@@ -493,7 +493,8 @@ class Cache_flip_event_log: public Event_log {

  void acquire()
  {
-    auto prev= ref_count.fetch_add(1);
+    IF_DBUG(auto prev= ,)
+    ref_count.fetch_add(1);
    DBUG_ASSERT(prev != 0);
  }